• P-graded, aluminum oxide abrasive for uniform stock removal and long life • Flexible cotton backing for superior conformability and life • Coarse grit for removing flash, parting lines and heavy scratch patterns • Wheels are designed with a 1/4-20 In. steel shank as an integral part of each wheel for better balance and quick change without the need of special tools • Due to the flap wheel design and the flexibility of the material, flap wheels leave a finer finish grit that other coated abrasive products • Flap wheels are an ideal choice for a wide variety of blending, deburring and finishing applications common in the metal fabrication, welding and polishing industries. Flap wheels are conformable to intricate shapes and contours. Designed to deliver a consistent finish with a uniform rate of cut, flap wheels wear away, continually exposing fresh abrasives.