Features: 1.High quality material: made of high quality rubber and alloy, durable and long life. 2.Easy to use: If the external hose of the pump is too short, you can add a 15.5 cm long extension cable to use. 3.Lightweight and portable: This pocket-sized pump extension hose can be easily carried on trips, and the adapter can even be left on the tire bar so you39;re always ready to go. Conveniently fits inside your riding bag or jersey. 4.How to use: The threaded head on the extender screws onto your existing valve stem, and the included end cap can replace your existing valve stem cover. 5.Reliable and Durable: Swivel base is easy to use and connects directly to your inflator tool, making it very easy to use. Notice: Actual color may be slightly different from the image due to different monitor and light effect Please allow 1-3cm deviation due to manual measurement Description: Material: rubber, alloy Size: about 155*7.5mm Capacity:Max 150PSI Weight:about 11g Package List: 1* Inflator Extension Hose