Flap wheel, also known as thousands of flaps wheel, chuck wheel, belongs to a coated abrasives, each product with hundreds of thousands of pieces of abrasive cloth bonded into, so named. Flap wheels continue to provide new abrasive surfaces as the flaps wear away. Flap wheels are an ideal choice for a wide variety of blending, deburring and finishing applications common in the metal fabrication, welding and polishing industrieshttp://www.winoneabrasives.com/grinding-wheel/