SK 378 SuperKrome Offset Flare Nut Wrench Set &ndash; 6-Point 9-Millimeter to 21-Millimeter Fasteners for Mechanical work. Professional Master Tool Set Durable Flare Nut Wrench Set: features patented super chrome finish for durability and maximum corrosion resistance. Nut wrench set is also resistant to chemicals and fire. Slip resistant grip offers protects the tool from abrasion Varied Dimension Fastener: wrenches measure 9mm-by-11mm, 10mm-by-12mm, 13mm-by-14mm, 15mm-by-17mm, 16mm-by-18mm, and 19mm-by-21mm. varied sizes suitable for versatile applications Flare Nut Applications: flare nut wrenchesprovide 6 points of contact for more secure grip on soft fasteners like brass fittings and assists in loose and tightens hex nuts that secure a tube. The wrench offers great grasping of nuts and bolts, great deal of torque and keeps the nut tight and in place Portable Hand Tool: helps to work near firewalls, engines, wheels, and other restricted areas. Light weight and easy to carry in a small hand bag, the wrench set is suitable to use even on rusted or damaged fasteners Easy to Use: flare nuts are easy to use and are great for mechanical engineers or practitioners for working with ease. Fastener tool showcases offset of 15 degrees to create access space for your fingers, and keep the shank clear of obstructions