A flap wheel having double the grinding speed and more than double the speed and durability with grinding volume compared to a normal wheel.The flaps are embedded in a diagonal manner.Uses a zirconia abrasive material which is suitable for heavy grinding and has a long life.Rust remover, burring, polishing of pipe' s inner side.Polishing of metal, woodwork curved surfaces and different type of goods.Working Tool: Straight-type grinder.Grain Size (#):60Outer Diameter x W x Shaft Diameter x Shaft Length (mm):50 x 25 x 6 x 40Blade Number (sheet):Approx. 53Max Working Rotation Speed: 20000rpm