Search query: diamond grinder wheel

Product: Tanzfrosch 2 Pack 4 inch Diamond Cup Grinding Wheel 12-Segments Heavy Duty Turbo Row Grinding disc for Angle Grinder Polishing and Cleaning Concrete Granite Marble Stone Rock Cement
Brand: Tanzfrosch
Color: Gold
Description: Tanzfrosch 4" Diamond Cup Grinding Wheel
Package Included:
2 x Diamond Cup Grinding Wheel
NOTICE:
Wear all applicable safety equipment when using these grinding wheel disc.
- Eye protection (goggles)
- Ear protection (earmuffs)
- Hand protection (gloves)
- Lung protection (dust mask)
Warrant Policy :
If any of our products fail to meet your expectations, please get in touch with us and we will try our best to resolve the issue.
★ GOOD DESIGN: High diamond concentration for long life and aggressive material removal. Large grinding segments with heat-treated steel bodies which provide increases durability and wheel life.
★ COMPATIBLE MODEL: Suitable for grinding machines and angle grinders.
★ WIDE APPLICATIONS: Suitable for dry or wet grinding of concrete, granite, stone, marble, tile, masonry and some other construction material to smooth uneven surfaces and remove flashing.
★ WARM TIPS: Please check the size of the wheel to see if they can compatible with your gender! If it does not fit your gender or you don't know how to use it, please contact us, we are willing to help.
★ BUY WITH CONFIDENCE: If any of our products fail to meet your expectations, please get in touch with us and we will try our best to resolve the issue.
Relevance (ESCI, E=Exact S=Substitute C=Complement I=Irrelevant): E

Product: 4 Inch Concrete Turbo Diamond Grinding Cup Wheel 12 Segs Heavy Duty Angle Grinder Wheels for Angle Grinder
Brand: HRLORKC
Large grinding segments with heat treated cup design.
4 Inch grinding wheel 12 Segs heavy duty angle grinder wheels, made of high quality of diamond, use long life
Perfect for use on grinding on marble, tile, concrete and rock.
Use dry/wet to smooth concrete or field stone.
Any question, please feel free to contact us. We guarantee give you return or refund.
Relevance (ESCI, E=Exact S=Substitute C=Complement I=Irrelevant): E

Product: sansheng 4 Inch Concrete Turbo Diamond Grinding Cup Wheel 12 Segs Heavy Duty Angle Grinder Wheels for Angle Grinder(Yellow)
Brand: sansheng
Description: Color: Gold Weight: 190g .Package includes: 1* diamond grinding wheel 1.This diamond grinding disc are made of high quality steel with new diamonds, shock-proof, high temperature resistance 2.Air holes designed to help and maintain a stable sanding pattern and reduced wear 3.Suitable for all types of angle grinder and concrete grinder, such as 4/5 polisher adapt, on grinder with 5/8 arbor and 7/8 arbor 4.Ideal choice for people who make granite and marble worktops, gravestones, tiles, builders Note: -- Be sure to wear hearing protection, a dust mask, goggles and protective clothing before using the angle grinder
Material: Diamond.Color: Gold. Package includes: 1* diamond grinding wheel
Inner diameter : 22mm / 0.86 Inch
Diameter of Grinding Wheel: 100mm(4 inch)
Thickness of Grinding Wheel Disc Body: 29mm(1.14 inch)
Thickness of Gear: 7mm(0.28 inch)
Relevance (ESCI, E=Exact S=Substitute C=Complement I=Irrelevant): E

Product: SUNJOYCO 4" Concrete Grinding Wheel, 4 inch 12-Segment Heavy Duty Turbo Row Diamond Cup Grinding Wheel Angle Grinder Disc for Granite Stone Marble Masonry Concrete
Brand: SUNJOYCO
Color: Gold
Description: SUNJOYCO 4 Inch Diamond Cup Grinding Wheel 12 Segments Heavy Duty Turbo Row Concrete Grinding Wheel for Angle Grinder, Granite, Stone, Marble, Masonry, ConcreteWarm Tips:
Please check the size of the wheel to see if they can compatible with your gender! If do not fit your gender or do not know how to use, we are willing to offer you help.Specification:Material: HHSProduction process: sinteringColor: GoldOuter diameter: 100 mm /4 inchesInner hole diameter: 20mm / 0.79 inches (without metal ring)Inner hole diameter: 16mm / 0.63 inches (with metal ring)Thickness: 5 mm / 0.2 inchNot threadedHow to Use It Properly?1. Strictly follow the instructions in the machine manual.
2. Do not install a diamond dish/cup wheel that is too loose or too tight on the flange.
3. Tighten only with the tool provided with the machine.
4. Be sure to hold the wheels properly to prevent slipping, but do not use excessive force. Never use a hammer.
5. Keep flanges and threads clean without burrs and rust.
6. Before installing the wheel, please replace the deformed or damaged flange.Please protect yourself when start cutting!We recommend the following personal protective equipment:Eye protectionEar protection (earmuffs)Hand protection (gloves)Lung protection (dust mask)Important note:1. Never remove the machine's protective cover and make sure it is properly adjusted to keep debris away from you.
2. Make sure that no one else is in danger, especially near the machine while working.Package Included:
1 x 4-inch diamond concrete grinding wheel
SPECIFICATIONS：Size 1: 4" x 4/5" x 5/8" (100mm x 20mm x 16mm). Size 2: 4.5" x 7/8" x 5/8" (115mm x 22mm x 16mm). Size 3: 5" x 7/8" x 5/8" (125mm x 22mm x 16mm). Please double check the size info before purchase.
HOLE DESIGN: The angle grinder concrete grinding wheel features air holes designed to aid in maintaining and cooling the cutting pattern and reducing wear
FAST CUTTING AND DURABLE: Our diamond cup grinding wheel provides for very fast cutting action on masonry, stone, and concrete. High diamond concentration for long life and aggressive material removal. This diamond cup grinding wheel featured large grinding segments with heat-treated steel bodies increases durability and wheel life.
APPLICATION: Our 4 inch diamond grinder wheel is used for dry/wet grinding of concrete, granite, stone, marble, tile, masonry, and some other construction material to smooth uneven surfaces and remove flashing
WARRANTY: We provide 5-Year Worry-Free Warranty and Unconditional 90-Day Refund & Free Lifetime Technical Support. Buy with confidence! If you have any problem with our diamond grinding wheels, please contact us freely.
Relevance (ESCI, E=Exact S=Substitute C=Complement I=Irrelevant): E

Product: 4-1/2-Inch Diamond Cup Grinding Wheel, Double Row Diamond Grinder Disc for Concrete, Granite, Stone, Marble etc
Brand: APlus
Description: Main Feature:

Double row segments for quick material removal
Optimized bond and formula for longer life
Optimized segment height minimizes dust and debris
Surface finishing on concrete, screed and natural stone

How to Use:

■ Follow carefully the instructions given in the machine handbook.
■ Never fit a diamond dish/cup wheel which is too loose or too tight on the flange.
■ Tighten only with the tool supplied with the machine.
■ Ensure the wheel is properly gripped to prevent slippage, but do not tighten with excessive force. Never use a hammer.
■ Keep flanges and screw threads clean and free of burrs and rust.
■ Replace distorted or damaged flanges before fitting the wheel.

For your Safety:

We recommends the use of following personal protective equipment:

■ Eye protection
■ Ear protection (ear sets)
■ Hand protection (gloves)
■ Lung protection (dust mask, also called respirator)

Important Note:

Never remove the protective machine guard and make sure it is properly adjusted to deflect debris away from you.
Ensure that no other person is at risk, especially near the machine while working.

From the Factory:

APlus Double Row Segmented Diamond Cup Wheels are designed for grinding concrete and field stone. The double segment configuration allows for faster material removal.
Double Row Segmented Diamond Cup Wheels are designed for grinding concrete and field stone
Suitable for grinding machines and angle grinders
The double segment configuration allows for faster material removal
Surface finishing on concrete, screed and natural stone Can also be used for removal of glues and epoxies
Brazed double row segments for fast and smooth grinding with 5mm segment height use dry
Relevance (ESCI, E=Exact S=Substitute C=Complement I=Irrelevant): E

Product: 3 Inch 150 Grit Flat Diamond Grinding Wheel Cutter Grinder Power Tool with 1/2" Bore for Grinding Hard Alloy, Glass, Tiles and Ceramics 78x12.7x10mm
Brand: SYPARTS TOOL
Color: 78x12.7x10mm
Description: Features:
-100% Brand new, high quality, sharpness, it has high hardness, long service life.
-Good shape retention, strong grinding capacity, precision machining and high grinding efficiency.
-The diamond sand is evenly attached and wear-resistant, and it is not easy to drop sand.
-Suitable for grinding hard alloy, non-metallic materials, cutting hard and brittle carbide, non-metallic minerals.
-Mainly used for grinding hard alloy, tungsten steel milling cutters, also can be used for glass, tiles, gems, ceramics, molds and other materials edge grinding and chamfer.
-Mainly applicable to small side grinding machine, grinder.
Specification:
-Material: Diamond sand coated
-Diameter: 78mm/approx. 3"
-Bore Diameter: 12.7mm/Approx.1/2"
-Thickness: 10mm
-Grit Width: 10mm
-Grit: 150#
Package Include:
-1Pc Diamond Grinding Wheel as picture show.
Note:
-Please be carefully check the goods appearance, size, shape and then compare your original goods before ordering, thank you.
-Light shooting and different displays may cause the color of the item in the picture a little different from the real thing.
-Since the size above is measured by hand, the size of the actual item you received could be slightly different from the size above. Please don't mind, thank you!
Material: Diamond sand coated ; Grit: 150# ; Grit Width: 10mm
Diameter x Bore Diameter x Thickness: 78mm/Approx.3" x12.7mm/Approx.1/2" x 10mm
The diamond sand is evenly attached and wear-resistant, and it is not easy to drop sand.Good shape retention, strong grinding capacity, precision machining and high grinding efficiency.
Mainly used for grinding hard alloy, tungsten steel milling cutters, also can be used for glass, tiles, gems, ceramics, molds and other materials edge grinding and chamfer. And mainly applicable to small side grinding machine, grinder.
1Pc Diamond Grinding Wheel
Relevance (ESCI, E=Exact S=Substitute C=Complement I=Irrelevant): E

Product: SHDIATOOL 4-1/2 Inch Turbo Row Diamond Grinding Cup Wheel for Concrete Granite Marble Masonry Brick Fits 7/8 Inch Arbor
Brand: SHDIATOOL
Description: Product Name:
4 1/2-Inch Turbo-Row Diamond Grinding Cup Wheel

Specification:
7/8-Inch Arbor, 4.5mm workable thickness, Grits 40-50

Application:
For concrete, Masonry, and some other construction material

Feature:
1.Technology: Sintered
2.Low cost, high efficient
3.Effective in the process of grinding and polishing
4.Excellent service
5.Long lifespan and stable performance
Turbo-Row design with 24 diamond segments, for 7/8" arbor
4-1/2 Inch(Outside diameter 115mm), 3MM Strong steel body and 4.5MM workable thickness
40-50 Diamond Grit for grinding CONCRETE/MASONRY/GRANITE/MARBLE/BRICK...
Turbo Row Design for more flat, persistent and smooth grinding
Strong steel body provide stable cutting performance and good finishing on the Lower cost to save your money
Relevance (ESCI, E=Exact S=Substitute C=Complement I=Irrelevant): E

Product: 2 Pieces Diamond Cup Grinding Wheel, Include 4-1/2 Inch 644030 Double Row Grinding Wheel, 4 Inch 12-Segment Turbo Row Grinding Wheel Angle Grinder Disc for Grinder Polishing and Cleaning Stone
Brand: Mudder
Color: Gold
Description: 2 Pieces diamond cup grinding wheel, include 4-1/2 inch 644030 double row grinding wheel and 4 inch 12-segment turbo row grinding wheel angle grinder disc for grinder polishing and cleaning stone

Be cautious when use:
Diamond wheels are easy to use and install, suitable for grinders and angle grinders. Please follow the using instruction of angle grinders and grinders during use to avoid accidents, ensure that no other person is at risk.

Wide applications:
These diamond cup grinding wheels work well for dry or wet grinding of different types of stone, including concrete, granite, marble, ceramic tile, masonry and some other construction materials.

Specification:
Material:heat-treated steel body and high concentration of diamond
Color: as shown in the picture
Size: as shown in the picture
Weight: approx. 20 oz

Package includes:
1 x Double row diamond cup grinding wheel
1 x Turbo row diamond cup grinding wheel

Note:
Please allow a little error on the size due to manual measurement.
Please keep them away from kids and be careful when using.
Strong and sturdy: made of heat-treated steel body and high concentration of diamond, these diamond cup grinding wheels are rust and corrode resistant, not easy to deform, removing materials quickly
Fast sanding efficiency: at a height of 5 mm, the brazed double-row fan and brazed corrugated turbo row fan are designed for fast and smooth grinding, whether for wet or dry use, the diamond wheel with air holes design can help maintain and cool the cutting pattern to reduce wear, improving the work efficiency
Easy to operate: diamond grinding wheels are easy to operate and install, which are suitable for grinders and angle grinders; Please follow the using instruction of angle grinders and grinders during use to avoid accidents
Widely applied: these grinding wheels in 2 different styles are suitable for various types of stone, which can be applied for dry or wet grinding of concrete, granite, marble, ceramic tile, masonry and some other construction materials, smoothing uneven surfaces and removing flash
Double row and turbo row: you will get 2 pieces of diamond cup grinding wheels in 1 package, each is equipped with 1 piece of silver ring, one is 4-1/2-Inch 644030 double row grinding wheel, and the other is 4 inch turbo row grinding wheel, which helps you to easily cope with different occasion
Relevance (ESCI, E=Exact S=Substitute C=Complement I=Irrelevant): E

Product: ROK 4-1/2 inch Diamond Saw Blade Set, Pack of 3
Brand: ROK Tools
Color: Original version
Description: 3pc kit ideal for cutting tiles made of Granite, Marble, Ceramics, concrete & other similar material. Fits all Angle grinders with a 7/8" or 5/8" arbor. 15,000 RPM Max,

Blades are made of high quality diamond steel and they can be used wet or dry.
3pc Kit Contains:
1 continuous rim For Smooth cutting of marble, granite, tile & ceramics
1 segmented rim For Fast general purpose cutting for masonry, concrete, pavers, Terrazzo, Roof tile.
1 turbo rim For smooth & fast cutting of masonry, concrete, pavers, Terrazzo, Roof tile.
Can be used wet or dry, fits angle grinders with a 7/8" or 5/8" Arbor (adapter included for 5/8")
Relevance (ESCI, E=Exact S=Substitute C=Complement I=Irrelevant): E

Product: KSEIBI 644052 Super Turbo Diamond Cup wheel 4-1/2 Inch (115 mm)
Brand: KSEIBI
Color: Gold
Description: Main Feature:

Double row segments for quick material removal
Optimized bond and formula for longer life
Optimized segment height minimizes dust and debris
Surface finishing on concrete, screed and natural stone

How to Use:

■ Follow carefully the instructions given in the machine handbook.
■ Never fit a diamond dish/cup wheel which is too loose or too tight on the flange.
■ Tighten only with the tool supplied with the machine.
■ Ensure the wheel is properly gripped to prevent slippage, but do not tighten with excessive force. Never use a hammer.
■ Keep flanges and screw threads clean and free of burrs and rust.
■ Replace distorted or damaged flanges before fitting the wheel.

For your Safety:

We recommends the use of following personal protective equipment:

■ Eye protection
■ Ear protection (ear sets)
■ Hand protection (gloves)
■ Lung protection (dust mask, also called respirator)

Important Note:

Never remove the protective machine guard and make sure it is properly adjusted to deflect debris away from you.
Ensure that no other person is at risk, especially near the machine while working.

From the Factory:

KSEIBI Double Row Segmented Diamond Cup Wheels are designed for grinding concrete and field stone. The double segment configuration allows for faster material removal.
Supper Turbo Segmented Diamond Cup Wheels are designed for grinding concrete and field stone
Suitable for grinding machines and angle grinders
The turbo segment configuration allows for faster and soft material removal.
Surface finishing on concrete, screed and natural stone Can also be used for removal of glues and epoxies
Brazed wave row segments for fast and smooth grinding with 5mm segment height use wet or dry
Relevance (ESCI, E=Exact S=Substitute C=Complement I=Irrelevant): E

Product: AUTOTOOLHOME 4 1/2-inch Diamond Blade Angle Grinder Dry Cutting Wheel Grinding Stone Brick Concrete Ceramic Tile Cut Off Wheels Disc
Brand: AUTOTOOLHOME
Description: Features
100% High quality and Brand new.
Diamond Cutting Disc Blade 4.5” Segmented masonry angle grinder Disc Blade 115mm(4.5")?
A General Purpose Diamond Saw Blade Suitable for Cutting a Wide variety of Bricks and a range of concrete products.
Idea for Wet/Dry Cutting in: Concrete, Masonry, Stone, Asphalt, Retractories and Granite.
Outstanding Cutting Performance.
Long Cutting Life.

Specification
13000 Rpm Max
Bore 115 x 1.8 x 22mmreplacement 16mm ring(4.5x0.07x0.86inch)replacement 20mm(0.78") ring

Package Includes
1 x 115mm(4.5") diamond cutting disc
4-1/2” Premium Segmented Diamond Blade for FAST & RELIABLE Tile,Concrete, Cinder Block & Brick Cutting, compatible with All 4-1/2” Angle Grinders and marble cutters ,with 7/8” arbor
Stronger hot-pressed cutting segments combines aggressive cutting ability with a fine, clean cut and no burning of the segments. Elimination the possibility of single segment detachment.
Idea for Wet/Dry conditions Cutting in: Concrete, Masonry, Stone, Asphalt, Retractories and Granite
Steel core is made from high alloy, heat-treated steel. ensuring clean cuts as well as a disc operation that is characterized by smoothness and a low level of vibrations.
DESIGNED for Hard and Continuous use by professionals in construction, concrete fabrication, general maintenance, brick layers & general industrial applications, Each blade is engineered to work at 13,300 RPM and a maximum cutting depth of 1" to 1-1/4 inch
Relevance (ESCI, E=Exact S=Substitute C=Complement I=Irrelevant): E

Product: OCR 4" Concrete Turbo Diamond Grinding Cup Wheel Three Row Turbo Cup Disc Grinder for Angle Grinder 12 Segs Heavy Duty (Yellow 12segs B)
Brand: OCR
Color: Yellow 12segs B
Description: Main Feature:
6 Hole Dust Extraction
Provide the optimal & necessary combination of allowable airflow and debris removeal. The air holes designed is help to maintain and cool the cutting pattern and reduce wear so as to produce a more consistent diamond scratch pattern.

High-Grade Diamond
This diamond grinding wheel has a high diamond concentration for a long serving time and aggressive material removal which provides a very fast cutting action on masonry, stone and concrete.

12 Diamond Segments
Perfect for optimizing a smooth and effcient removal of materual.

Outside Diameter: 4 Inch

Widely Application:
Suitable for dry or wet grinding of concrete, granite, stone, marble, tile, masonry and some other construction material to smooth uneven surfaces and remove flashing.

For your Safety:
We recommends the use of personal protective equipment:
Eye protection (blinkers)
Ear protection (ear sets)
Hand protection (gloves)
Lung protection (dust mask)

Package includes:
1* diamond grinding wheel
★FAST CUTTING: Heavy Duty Contractor PRO Grade 4 Inch Grinding Wheel provides for very fast cutting action on masonry, stone and concrete.
★DURABLE:Large grinding segments with heat-treated steel bodies of our concrete grinding wheel increases durability.
★AIR HOLE DESIGN: Designed to maintain a stable cutting pattern and reduce wear and tear.
★WET/DRY USE: Perfect for both fast and smooth grinding, can be used in wet or dry state, great to use in different situations. Adding some water, you get better effects during grinding.
★APPLICATION: Suitable for use on grinding on marble, tile, concrete, rock and some other construction material to smooth uneven surfaces and remove flashing.
Relevance (ESCI, E=Exact S=Substitute C=Complement I=Irrelevant): E

Product: 7" Aggressive Grinding Wheel #18/20 Diamond 5/8"-11 Arbor for Concrete and Paint, Epoxy, Mastic, Coating Removal
Brand: EDiamondTools
Description: #18/20 diamond grit Designed to remove paints, epoxies, mastics, water-proofing coating. markings & lines. - Grind curb gutters, expansion joints, high spots. prep surfaces for coating. - #18/20 diamond for aggressive grinding and fast stock removal. - 7" Diameter, 14 S Segments, 5/8"-11 threaded - Fits angle grinders
#18/20 diamond grit to grind concrete, masonry, and remove paints, epoxies, mastics, water-proofing coating. markings & lines.
Grind curb gutters, expansion joints, high spots. prep surfaces for coating.
#18/20 diamond for aggressive grinding and fast stock removal.
7" Diameter, 14 S Segments, 5/8"-11 threaded
Fits angle grinders
Relevance (ESCI, E=Exact S=Substitute C=Complement I=Irrelevant): E

Product: DEWALT Grinding Wheel, Double Row, Diamond Cup, 4-1/2-Inch (DW4774)
Brand: DEWALT
Extended performance diamond matrix provides 350x's the life of conventional abrasives and aggressive material removal
Large Grinding segments with heat treated steel bodies which provides increases durability and wheel life
Relevance (ESCI, E=Exact S=Substitute C=Complement I=Irrelevant): E

Product: DEWALT Diamond Blade for Masonry, Dry Cutting, Continuous Rim, 7/8-Inch Arbor, 4-1/2-Inch (DW4725)
Brand: DEWALT
Color: Original Version
The product is 4-1/2" HiPerf MAS Blade
Easy to use
The product is manufactured in China
High Performance diamond matrix provides 200x's the life of conventional abrasives and enhanced material removal
Thinner kerf to increase speed of cut while minimizing dust
Relevance (ESCI, E=Exact S=Substitute C=Complement I=Irrelevant): E

Product: Makita 2 Pack - 4.5” Turbo Diamond Blades For Grinders & Circular Saws - Ultra-Fast Cutting For Concrete, Masonry & Brick - 5/8”, 20mm & 7/8” Arbors
Brand: Makita
Description: Optimize your concrete, block, and brick cutting work with this Makita 2 Pack Premium 4-1/2” Diamond Turbo Blades. Working at a 90-degree angle, perpendicular to the work surface, applying the proper amount of pressure to allow the cutting blade to do the work. For best results, consider not pushing too hard on the blade, which can cause the grinder to stall or kick back or give a less efficient cutting action, while also increasing the chances of slippage or loss of control of the tool, resulting in injury or damage and premature wear. Applying light to moderate pressure and consistent movement will provide the most efficient cut and minimize heat build-up causing warpage of the blade. Consider using light pressure and a consistent motion throughout the cut for the fastest cut-rate and prolonged wheel life. Excessive pressure through the cut causes increased friction and heat build-up, which can cause blade warpage and reduced wheel life. For demanding applications, higher amperage &/or torque angle grinders provide easier, long-lasting & efficient cuts.
✅ 2 Makita 4-1/2” Premium Diamond Turbo Blades For FAST Concrete, Cinder Block & Brick Cutting | 4 1/2" x 0.79 x 7/8-Inch Arbor, Optimized for Makita 4-1/2” Angle Grinders and compatible with All 4-1/2” Angle Grinders with 5/8” arbor
✅ CUT 2-3X MORE concrete than lower quality blades due to Makita's Industry leading Diamonds and Premium Bond that provide the optimal cut-to-wear ratio, optimized for balanced Cut Life, Cut Rate, Cut Precision, Power Demands & Heat Buildup, allowing you to cut longer, consistently precise with moderate power demands with the lowest heat buildup in the industry
✅ QUICKLY & EFFORTLESSLY CUT through All Concrete, including general cured concrete, reinforced concrete, block & brick cutting in Wet or Dry conditions over an extra-long life span due to Makita’s Premium High Quality Industrial Diamonds with Makita’s proprietary bond that allows for optimal diamond exposure-to-bond wear ratio for accurate cutting PERFORMANCE, HIGHER TEMPERATURE RESISTANCE & STABILITY, cutting longer and faster than other blades in its class
✅ AVOID BLADEWEAR & Slow Downs with lower priced blades by relying on Makita’s proprietary matrix bond, allowing for fast, accurate and continuous cutting PERFORMANCE, PRECISION, LONGEVITY, STABILITY & INTEGRITY, cutting Longer, Faster and Reliably than other blades that may warp or prematurely wear
✅ DESIGNED for Hard and Continuous use by professionals in construction, concrete fabrication, general maintenance, brick layers & general industrial applications, these blades are Quality tested and laser welded for unsurpassed blade integrity, planned to outperform other blades in its class | Each blade is engineered to work at 13,800 RPM and a maximum cutting depth of 1" to 1-1/4 inch
Relevance (ESCI, E=Exact S=Substitute C=Complement I=Irrelevant): E