Remove the old thread of the derailleur hanger by drilling using the 12 mm drill bit, then place the insert corresponding to the thickness of the derailleur hanger from inside the frame.
Screw the rear derailleur axle into the insert thread and your derailleur hanger is saved.
Storage box including:
- 1 HSS drill of 12 mm neckline at its base at 6 mm
- 3 threaded inserts with hexagonal heads in 4.95 mm
- 3 threaded inserts with hexagonal heads in 5.85 mm
Weight: 109g
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