This product is a valve extension tube. This copper extension tube has 3 angles, two colors, Suitable for tire inflation of motorcycles, ordinary cars, unicycles, etc. All American valves are universal, exquisitely made of 62 copper, beautiful appearance. Category: Valve Extension Tube Dimensions: bottom outer diameter 10mm, bottom internal thread 8V1, head external thread 8V1, total length 40mm Application: American valve Material: pure copper quantity: 1 1x valve extension tube