Rely on this Merit AO medium grit mini flap wheel for your moderate deburring and surface-blending projects. The wheel's flaps are constructed of a heavy cotton and polyester blend to ensure durability, conformability, and excellent resistance to wear. A high-quality aluminum oxide abrasive provides a superior cut rate and lifespan, while the steel shank design offers chatter-free finishes, excellent balance, and quick changes on any tools that feature a collet design.