The Super B sprocket remover is compatible with Shimano HG, SRAM, SunRace and SunTour systems. With this extractor you can turn with a 21mm wrench or with the 14282 wrench. It is ideal 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