metal forming dies 1,Materials: HSS M2, SKH9 2,Tolerance: ... 3,Working life: 20,0000times 4,8-10 work days metal forming dies SpecificationsType circular, Square Header , hexagonal , R- ... (Mainland)Machine TypePunching Machine Please specify the details of metal forming dies as follows when you inquiry1,The shape of ... example:M2.0,D 14*25.4,The surface coating type ,for example:Tin,Ticn5,It is the best to ...