Specification 1: *Type :Circular Resin Grinding Wheel *Perfect for cutting and polishing ceramic tile, wood, stone, steel and etc.. *Material: Composite corundum abrasive *Outer diameter: 75mm *Bore diameter: 10mm *Thickness: 1.2mm *Color: Black *Quantity: 15Pcs Specification 2: *Processing object: metal *Material: Resin *Diameter: 115 mm/4.5 inches *Aperture: 7/8" (22mm) *Thickness: 1.2mm (0.047") *Color: as shown Package Contents: 1/5/15pcs * Grinding Wheel