3M RADIAL BRISTLE DISCS BRUSHES BLUE 400 GRIT 3/4" Pack of 12 BRISTLE DISC BRUSH (E1) 3M RADIAL BRUSH BRISTLE DISCS BLUE 3/4" 400 GRIT CLEAN and FINISH with BRISTLE BRUSH - PACK OF 12 - 400 GRIT Bristle Brushes- These are the unique 3M Radial Bristle Discs a new type of abrasive that is superior to sandpaper, flap wheels, or other types of sanders, brushes, or abrasive wheels. The 3M bristle materials are long lasting and very effective. The 3M Cubitron and aluminum oxide grains embedded throughout the plastic bristles make them very long lasting. Their flexible bristles can reach into areas with detail and irregular, curved, or flat surfaces. Bristle Discs can be stacked, use as many discs as needed on rotary miniature mandrels, use them like natural bristle brushes, without any compounds - which is already impregnated in the disc material. The different colors of discs designate the grade. Depending on the application, you will want to stack between three and six discs. The discs are very flexible, cool running, long lasting and provide a uniform finish. APPLICATIONS: Woodworking - Woodcarvers will appreciate how well they remove the "fuzzies" without harming any of the underlying detail. Jewelry & Crafts - Jewelers and Metalsmiths use the various grits of these discs, for cleaning, pre-polishing, metal surface Satin Texture finish and polishing of precious metals. Die & Mold Shops - Metal working when cleaning parts and molds, especially good on hard to polish materials like titanium and valplast. - Coarser grits can be used to clean and remove surface oxides, in carving and grinding,surface texture while finer grits will smooth, burnish and polish. - The 3M Cubitron and Aluminum Oxide grains embedded throughout the plastic bristles make them very long lasting. JETS Product # 1111-931400-12 Sale is for a pack of 12 Brushes Sale is for 12 Radial Bristle Discs ....Items are New - never used Mandrel is only to show bristles mounted.