Dp16 PA14-1/2 Bore22 No. 1-8 Involute Gear Cutters+ 7/16 Inch 22mm R8 Shank Milling Arbor Gear Mill Cutter Holder Machine Set 8 Pcs Dp16 pressure angle: 14.5 degree Set 8 Pcs Dp16  Outside Dia: 55mm Set 8 Pcs Dp16 inner Bore: 22mm R8 shank gear cutter holder fitting for hole 22mm gear cutter R8 shank gear cutter threaded 7/16(Inch)