1.This 28pcs punch and chisel set contain: 16pcs punch and chisel set made of chrome vanadium,12pcs punch and chisel set made of carbon steel .
2.Heat treated chromium vanadium provides a high hardness rating that prevents rapid expansion of the head and passivation of the chisel and punch.
3.Available in different shapes and designs, including: bolt hole alignment, ball head separation, unfolding knuckle, center punch, knockout bolts and pins.
4.Flat chisels are tempered to resist splitting and mushrooming.
