Crown screw wrench Discover the crown screw wrench Shimano TL-FC21, the perfect tool for easily dismantling and assembling your chainring screws.
The SHIMANO TL-FC21 wrench is specially designed for removing and assembling chainring bolts and dust caps for crank arms. It holds the chainring nuts in place while you open the chainring bolts with an Allen key.
| Brand | Shimano |
| Supplier reference | Y13009700 |
| Color | silver |
| Color | Silver |