Shop-Tek 3" x 60 Grit Aluminum Oxide Sanding Disc (Pack of 25) 3-inch diameter, 60 grit industrial quality aluminum oxide sanding disc Features quick change, roll-on and lock Silicon carbide resin bonded is versatile for metal, plastic and wood Ideal for weld grinding, blending, finishing, deburring and other general purpose applications Pack of 25 for great value