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 steelFits Presta Valve and Schrader Valve bike tubesFile tread grip creates a comfortable and ergonomic gripAides in the overhaul of suspension forks and rear suspension shocksLimited Lifetime Warranty