Product Application To produce cuts for cylinder head bolts, hex bolts and nuts. Great for burr-and chatterless sinks in steel, cast iron, non-ferrous and light metals. Great results at low cutting speed. For tapping drill hole Countersinking diameter 18.0 mm for M 10 Pin diameter: 8.5 mm. Shaft diameter: 12.5 mm. Overall length: 100 mm.