Standard Pack = 1 piece(s). Grit = 220 ; Head Diameter = 0.039 IN ; Head Size = .039 x .079 IN ; Head Width = 0.079 IN ; Overall Length = 2-1/4 IN ; Shank Diameter = 1/8 IN ; Shoulder Length = 0.25 IN ; Type = Carbon Jig Grinding Mandrels ;