Features: - Durable and no wear.- Used for pre-grinding before polishing, widely used in stainless steel polishing, automobile making, shipbuilding, instrument grinding polishing, etc.- Flower shaped grinding disk have good heat dissipation performance, can avoid heat deformation, high efficiency and provides stable grinding and polishing.- Good strength tensile and grinding pressure provides excellent production efficiency.Model: Polishing Grinding WheelMaterial: Alumina Emery ClothColor: See PictureQuantity: 3pcsStandard: 52#, 72#, Calcination 72#Outside Diameter: 4 InchInner Diameter: 16mmProduct Weight : 160 G / 5.64 OuncesProduct Dimensions (L*W*H) : 100*100*30 MM / 3.94*3.94*1.18 InchesPackage Weight : 160 G / 5.64 OuncesPackage Dimensions (L*W*H) : 100*100*30 MM / 3.94*3.94*1.18 InchesRetail Packaging: No, No PackingPackage Include:3 x Polishing Grinding Wheel