SUPER B's Valve Core Remover is a small, handy tool designed to remove and install Schrader (Coarse) and Presta (Fine) valve cores, as well as remove and install valve extensions. It is perfect for use on MTB, road, city, BMX, e-bike, children's, gravel, cyclocross and trekking/touring. RECOMMENDED USE: MTB HIGHWAY CITY BMX E-BIKE CHILDISH GRAVEL CYCLOCROSS TREKKING/ TOURING