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Constructed to be used during chainring removal, Shimano's TL-FC22 T-40 Hexalobular Chainring Bolt Backing Tool is the brand's professional-grade model of the tool. With a chromium and nickel plating, the TL-FC22 was designed to remain durable through extensive usage, and its comfortable handle and stabilizing guide pin aim to make chain ring installation and removal as straightforward as possible. Shimano notes that it's best to pair the TL-FC22, which is compatible with both slotted and torx T40 chain ring fixing nuts, with its TL-FC23 wrench.