Product Description Small and practical: the VC-1 Valve Core Tool by ParkTool Small and practical tool for removing and installing valve cores on Schrader and Presta valves as well as Presta extenders with 5 mm wrench flats. Compatibility:Schrader valvesPresta valvesPresta extenders (5 mm wrench flats) Note: Not all Presta valve cores are removable. Manufacturer Number: VC-1 Contents:1 x Manufacturer: Park Tool Company 1185 Eagle Lake Rd Shoreview MN 55126 USA info@parktool.com Distributor: GROFA Action Sports GmbH Otto-Hahn-Straße 17 65520 Bad Camberg Germany info@grofa.com