Ball Valve stem.According to your drawing and needs.2MaterialandspecificationTypeSpecificationMaterialRemarksballValvestemDN10~DN700410,420,416,431,303,304,316,316L,17-4PH,F51,S32750,4140Uponreceiptofyourrequirements3ApplicationForvariousballValveswithdifferentDNdimensions.