The TOOPRE TL-S26 Single Speed Freewheel Removal Tool is made from heat-treated 45# high carbon steel with CNC precision machining for accurate fit and reliable durability. Designed for compatible 16T, 17T, and 18T single-speed freewheels, it is ideal for BMX, fixed gear, and single-speed bike maintenance. Use with a 24mm open-end or adjustable wrench.