"Whether you're building up a tool bench in anticipation of at-home maintenance to come or you need to swap a freehub body as soon as possible, Shimano's TL-SR23 11-6S Multi-Speed Sprocket Remover is a valuable tool to have on-hand if you're running an 11-speed drivetrain. The chrome-plated chromoly blade promises long-term durability, and the comfortable handle helps avoid wear-and-tear at the tool's other end. When not in use, a magnet on the end of the chain eliminates the ""whip"" part of chain whip. The TL-SR23 works only to remove fixed gear lock rings, not fixed gear sprockets, and it's designed to be paired with the TL-LR15/20 lock ring tools."