WHAT YOU GET 1 x Blue Valve Core Removal Tool; 10 brass valve cores for daily use and replacement.SMALL HANDLING TOOLThis valve removal tool is a handy little tool designed for removing and installing Schrader and Presta valve cores and for removing Presta valve extenders.UNIVERSAL VALVE COREIt has good airtightness. Made of premium brass, corrosion resistant, smooth thread and long service life.EASY TO INSTALLUse a wrench or valve disassembly tool to screw in the Presta valve stem, one end for Presta valve core, and the small end for Schrader valve core. the inner tube tire valve tools, make it become a great replacement tool. The tool is lightweight and easy to carry, a great accessory for cycling lovers, you can choose the right one for your bike.Specifications:Material: BrassColor: BlueSize: as the picture showsPackage Included: 1 x valve disassembly tool 10 x Presta valve core How to use? Use a key holder for the Presta valve expansion.Use the larger end for the Presta coil. Use the small end for the Schrader coil.