Size: 1/4"-2"Part materialPlastic cover plasticHandle AISI 304Thrust Washer PTFEPacking Ring AISI 304Stem Packing PTFESeat PTFEStem AISI 316Stem Nut AISI 304Ball ASTM-A351 CF8MBody Cap AISI316 OR ASTM-A351 CF8MBody ASTM-A351 CF8M