Specifically forged for use on powered impact tools. Precision cold-forged, hardened and tempered chrome vanadium steel. Clear, laser-etched sizes and industrial phosphate-coated for tough corrosion resistance. Side wall hole for ball or pin locking to the tool. Contents: 75, 150 and 250mm. Specifically forged for use on powered impact tools. Precision cold-forged, hardened and tempered chrome vanadium steel. Clear, laser-etched sizes and industrial phosphate-coated for tough corrosion resistance. Side wall hole for ball or pin locking to the tool. Contents: 75, 150 and 250mm.