Schwalbe Clik Valve Set for Wheel Conversion Upgrade your bicycle wheels with the Schwalbe Clik Valve set, perfect for retrofitting. If you already use a Schwalbe Clik Valve pump head or an adapter and want to convert additional wheels to the convenient Clik Valve system, this set is ideal. It includes two high-quality Schwalbe Clik Valve valves, ensuring easy and reliable valve replacement for your bike. Contents: 2x Schwalbe Clik Valve valves