HSS punch 1,Materials: HSS M2, SKH9, ASP 2,Tolerance: less than 0.005mm 3, ... Working life: 20,0000times 4,8-10 work days HSS punch specificationsType circular, Square Header , hexagonal , R-shaped…MaterialHSS M ... , China(Mainland)Machine TypePunching Machine Please specify the details of HSS punch as following when you inquiry1,The shape of punches ...