Lezyne Clik Valve Cores by Schwalbe Upgrade Your Setup Upgrade your setup with Lezyne Clik Valve Cores by Schwalbe. These are fully compatible with Lezyne Clik Chuck solutions for faster, easier bike tire inflation. These valves replace your existing Presta valve cores and provide an innovative, quick connection with compatible bike pumps. These are made from machined aluminum and provide increased airflow. Features Innovative, quick connection with compatible bike pumps Made from machined aluminum Reliable, long-lasting bike valve cores that provide increased airflow Weight: 6g | Lezyne | Clik(R) Valve Cores By Schwalbe Black