Shimano Chainwheel Screw Tool TL-FC21

    Delivery time:5-7 Days
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  • Description

For holding the back of chainwheel screws while you tighten the front with an allen key.

Most derailleur hangers are attached using a chainwheel screw, so this is the tool to allow a derailleur hanger to be properly tightened (along with an allen key). Weight: 17g.