Standard Pack = 1 piece(s). Diameter = 20 inch ; Grit Size = 36J ; Hardness = J ; Hole Size = 10 inch ; Material = Aluminum Oxide (83A) ; Size = 20 inch x 2 inch x 10 inch ; Thickness = 2 inch ; Spec = 86A36-JV ; Type = Centerless and Cylindrical Wheel ; Wheel Type = 83A ;