Hardened and tempered to with stand continuous use Clean and well cut knurling for nonslip and positive finger grip Finished with black oxide to inhibit rust 8in.L pins with 3 3/4in. Lpunch 8 round shank pin punches: 1/16in.,3/32in.,1/8in.,5/32in. 3/16in.,1/4in.,5/16in., 3/8in.