Description The Park Tool Adjusting Cap Tool (BBT-10.2) will allow you to remove & install crank arm caps on Shimano Hollowtech II cranks. Including those found on e-bikes. This specialty tool has a built-in hook to lift the safety plate on Hollowtech II crank arms. Making crank removal speedy. And because this is a professional workshop quality tool the cast steel will provide good leverage for removing seized or overtightened caps. Because Shimano Hollowtech cranks are exceedingly common, this tool is a useful addition to your arsenal. Even if you will be buying a new bike in the future, it’s a relatively safe bet to keep this tool in your garage for your next bike. Park Tool Adjusting Cap Tool BBT-10.2 features & specs Equivalent to Shimano TL-FC16 or TL-FC18 tool Includes an 8mm Hex fitting For instructions on how to remove a crank, check out this video from Park Tool. If you were needing a BB tool to suit a Hollowtech as well, check out the BB 16-Notch tool from Park Tool.