Cartridge BB Dedicated Adapter Installation Tool

TL-UN74-S" tool for removing and removing cartridge bearing type bottom bracket (BB).

This is a genuine Shimano tool that achieves high rigidity due to cold forging, so it can also be removed from the BBs that have been tightened.

Use a large monkey wrench with a 1.2 - 1.3 inches (31 - 32 mm).