[From SV/DV Valve to AV Valve] These bike valve adapters fit SV and DV valves Scalverand, Presta, Road Bike, Dunlop, Blitz and Standard. This compressor head is not compatible with AV valves: Automatic and Schrader valves.[With Extra Sealing Ring] The new design provides a built-in extra-large sealing ring. You can easily inflate your multi-barrel road bike.[Inflate Bike Tires at a Bike Stand or Gas Station] These convenient SV-DV adapters allow you to inflate bike tires anywhere with an AV tire valve pump, such as at a gas station.[Easy Valve Cap Installation] Screw the bike valve cap adapter onto the bike valve in seconds to inflate a flat tire.[Package Includes] 3 metal bike valve adapters for SV and DV valves, a set of convenient valve adapters.