Recently updated, the Valve Core Tool is now made of machined, hardened CrV tool steel – more durable and more precise than ever! If there ever was an underrated tool that you might not have in your bike tool kit, it has to be the Valve Core Wrench. Designed to remove or install Presta Valve and Schrader Valve cores, this tiny tool can truly make the process of installing or refilling flat-prevention sealants quick and painless. The versatility of the valve stem tool supports both valve types found on mountain bikes, road bike, commuting and electric bikes – never be stranded on your commute thanks to the Valve Core Wrench. Also found in our Team Edition Tool Kit.