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.Hardened machined tool steel Fits Presta Valve and Schrader Valve bike tubes File tread grip creates a comfortable and ergonomic grip Aides in the overhaul of suspension forks and rear suspension shocks Limited Lifetime Warranty