Standard Pack = 1 piece(s). Color and Bond = Blue Vitrified ; Diameter = 7 IN ; Grit Size = 46 IN ; Hardness = K ; Hole Size = 1 1/4 IN ; Material = Ceramic ; RPM = 3600 ; Size = 7 IN x 1/2 IN x 1 1/4 IN ; Thickness = 1/2 IN ; Wheel Type = Type 1 ;