Standard Pack = 1 piece(s). Color and Bond = Brown Aluminum Oxide Vitrified ; Diameter = 12 inch ; Grit Size = 24 inch ; Hardness = Q ; Hole Size = 1 1/2 ; Material = Brown Aluminum Oxide ; RPM = 2220 ; Size = 12 inch x 2 inch x 1 1/2 inch ; Spec = A24-QV ; Thickness = 2 inch ; Type = Bench & Pedestal Wheel ; Wheel Type = Type 1 ;