Heavy duty 52-58 HRC carbon steel construction Single piece design with hexagonal shank Useful for applications that require additional leverage Tempered and induction hardened for consistency and continuous use Accurately ground ends that will not splinter Powder coated with premium finish 7 pin punches: 1/16in., 3/32in.,1/8in.,5/32in ., 3/16in., 7/32in ., /4in.