MaterialForged AluminumSealBuna-NSwivel ThreadNST (NH)Swivel Thread Size3"Storz Size4"Working Pressure150 PSIWeight Lb3.4550ConstructionRocker LugMachined from forged 6061- T6 aluminumHardcoat anodized components per MIL-A-8625 Type III Class 1Cast aluminum lock lever assemblyBuna-N gasketsAvailable OptionsConsult Dixon for pricing and availability of other threads and sizes.