straight die punch 1,Materials: HSS M2, SKH,ASP 2,Tolerance: ... ,Working life is 20,0000times 4,8-10 working day straight die punch SpecificationsType circular, Square Header , hexagonal , R-shaped…MaterialHSS ... , China(Mainland)Machine TypePunching Machine Please specify the details of straight die punch follows when you inquiry1,The shape of punches ...