The Snap-on Punch and Chisel Set, No. PPC715BK, is designed with a special anvil end on the heads machined to a modified parabolic curve. This directs the striking force to the center of the tool head to help control mushrooming. The 16-pc PPC715BK reduces chipping and splitting and affords slow metal displacement during use. Built from quality steel alloy and heat-treated for optimum performance, the striking head adds to the toughness and reliability of this set.