The Rennsteig 6-pc Industrial Punch and Chisel Set is manufactured from high-grade German tool steel and comes with one 6" by 1/2" cold chisel and five parallel pin punches 4-1/2" by 1/16", 4-1/2" by 3/32:, 5-1/2" by 1/8, 5-1/2" by 5/32" and 5-1/2" by 3/16". The punches and chisels have a hardened striking head and they are heat-treated for a balance of hardness, strength and durability. This set comes with a storage case for portability.