European Style O-ring Seal Clamp-in Brass Valve 1)Rubber Material available: natural rubber, EPDM 2)Stem Material:brass 3)Fast Delivery & Good Pack 4)certificate:ISO9001:2008 and TS16949 Product Name: European Style O-ring Seal Clamp-in Brass Valve Model Number: V3.20.1 1.Our products are 100% leak tested and are made of only the highest quality materials 2.The tire valves can be quikly mounted to the rim.It is flexible in nature so it may provide complete air-seal even when it is bent for air service or tire pressure check. 3.It is Made with special rubber(as EPDM)compound to resist to O-zone damage and prevent temperaturedeterioration caused by rim hole ,heat,cold.Maximum inflation is420k Pa(60P.S.I) 4.we winned ISO/TS16949 ,ISO9001 5:delivery time: within one month normally Packing: Poly bags than cartons Qty/bag: 100pcs Qty/carton: 10 bags Welcome to contact us : phone: +86 133366-57152 mail to : amy (at ) cneverwin.com