This extra-coarse, 40-grit file belt measures 1/2 in. wide by 18 in. long and uses a coated zirconia alumina abrasive for aggressive stock removal. Its self-sharpening grain and lubricating grinding aid support cool cutting on heat-sensitive work and alloys such as stainless steel and titanium. A waterproof Y-weight polyester backing and resin bond provide grain retention and durability under moderate- to heavy-pressure applications, including metal fabrication, foundry snagging, surface grinding, and collision repair.