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"Very well thought out with the possibility of adding Alen wrenches to increase the lever arm, but if, as in my case, it's too seized up, it's not the right tool/solution (24 years without disassembly)".
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The SHIMANO TL-FC21 chainring bolt tool is designed for standard crankset chainrings with classic Shimano chainring bolts.
It features a 3-prong end to lock the split chainring fixing bolt and a 2-prong end for fitting and removing a crank cap with a single key. Made from high-quality hardened steel, it provides excellent rigidity and durability.
Ref: 7970448539814
Tool Type : Bottom Bracket Wrench
Overall rating: 3.5 / 5 from 2 reviews.
Review topics: [].
"Very well thought out with the possibility of adding Alen wrenches to increase the lever arm, but if, as in my case, it's too seized up, it's not the right tool/solution (24 years without disassembly)".
"you can always argue about technology, but it's a key and it does its job."