Features 1、Manufacturing Material: Made of high quality aluminum alloy material, high strength, wear resistance, sturdy and durable, which can undoubtedly effectively prolong its service life. 2、Unique Sealing Ring: The unique sealing ring not only improves air tightness, but also prevents nut looseness and hub damage. 3、Wide Applicability: This conversion adapter nut is suitable for refitting and replacing the lock nut of inside valve nozzle and vacuum tire valve nozzle. 4、Product Application: This section is used for the conversion of American valve nozzle into French valve nozzle, with wrench tool for easy assembly. 5、Simple Operation: Simple to operate, easy to use, easy to install and disassemble. Without any difficult requirements even though you use it for the first time. Specification Item Type: Bicycle Vacuum Tire Valve Cap Weight: Approx.6g / 0.2oz Material: Aluminum Alloy Product Model: RA109 Product Application: This Section Is Used For The Conversion Of American Valve Nozzle Into French Valve Nozzle Package List 1 x Wrench 2 x Rubber Ring 2 x Nut