Zefal Brass Presta Valve Adapter BlackThe Zefal Brass Presta Valve Adapter easily screws onto your Presta valve (the skinny kind) to convert it to Schraeder (what you've got on your car). This lets you pump your tire with a traditional gas-station air hose. Adapter can be left on the valve stem permanently, so that it doesn't get lost. One per.643187013007
