Package contents - 1 Valve Core Remover/Repair Tool for Schrader and Presta - 10 Presta valve cores - 10 Presta valve core caps Multi-functional design - Quick installation and removal of Schrader and Presta valve cores - Includes a 5 mm wrench for fast, convenient adjustments High quality materials - Tool body made of aluminum alloy for durability - Presta valve cores are copper and nickel plated for good air tightness, corrosion resistance, safety, and reliability Easy to use - Easy to screw onto Presta valve stems - Suitable for removing the valve core in tight or hard-to-reach areas, such as between spokes Compatibility and performance - Designed to work with Schrader and Presta valve cores - Includes 10 Presta valve cores and 10 Presta valve core caps for complete replacement and sealing Use scenarios - Home maintenance: Replace worn or leaking Presta valve cores and cap with a fresh set to restore tire seal and performance - Roadside repair: Carry the tool and spare cores for quick on-bike fixes during rides, minimizing downtime on the road - Workshop or shop setting: Perform routine valve core maintenance for multiple wheels, upgrading cores and protecting valves with caps for consistent performance