... life: 20,0000times 4,8-10 work days stamping die making specificationsType circular, Square Header , hexagonal , R-shaped ... TypePunching Machine Please specify the details of stamping die making follows when you inquiry1,The shape of punches ... material of products you produced3,The products size ,for example:M2.0,D 14*25.4,The ... surface coating type ,for example:Tin,Ticn5,It is the best to ...