Feature: 1. High-quality materials valve stem, CNC machining, anodizing. 2. The rubber base fits most mountain bike and road rim profiles. 3. Brass core, stable performance. 4. There are hexagonal grooves at the bottom, and the installation is firm; 5. With alloy threaded cap and tools. Specification: Product name: Bicycle valve set Valve Type: presta Size: about 44mm/1.73 inch Material: metal, plastic, rubber colour: Black Package Contents: 2 x valve stem 1 x plastic tool 2 x air nozzle gasket 4 x sealing ring 4 x duck nozzle gasket 1 x hexagon wrench Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.