Standard Pack = 1 piece(s). Color and Bond = Gray Vitrified ; Diameter = 7 IN ; Grit Size = 60 IN ; Hardness = J ; Hole Size = 1 1/4 IN ; Material = Aluminum Oxide ; Recess = 3 IN x 1/2 IN ; RPM = 3600 ; Size = 7 IN x 1 IN x 1 1/4 IN ; Standard Package = 10 ; Thickness = 1 IN ; Wheel Type = Type 5 ;