tire valve material: coppper ,rubber accessories: 9002copper core, c cap certification: TUV,TS16949 tire valve,tubeless snap-in valvesmaterial:brasa and rubberour goods have passed tuv,iso9001,TS16949 quanlity certification.we can meet diffrerent customers needs based on different materials.item noabrimholetr412223411.5tr413324211.5tr414384811.5 tire valve