1.The material for core ,cavity and neck ring is 2316,the material of mould base is p20 2.The hardness of core ,cavity and neck ring is HRC45-HRC48 3.The mould base internal coating by hard chrome without rust 4.Interchangable for core,cavity and neck ring 5. Tolerance of thickness less than+/_0.05mm 6. The weight or tolerance less than +/-0.3g 7. Warranty ;1million shots or one year
