Bottom Bracket Tool - BBT-18 - from Park Tool USA

Note: The BBT-18 is an updated version of the BBT-8 tool.

The outside diameter of the tool has been changed so it provides a universal fit on the following eight-notch cups:

Shimano

ISIS drive

ISIS overdrive

The BBT-18 has 8 notches with an outside diameter of nominally 43.4mm. The inside-to-inside width is approximately 38mm. Each notch is approximately 3.9mm wide. The hole in the center of the casting is 22.5mm, and will not fit over the 30mm spindles.

Park Tool reference: BBT-18.

About Park Tool :

Park Tool has been manufacturing bicycle specific tools since 1963.

Based in St. Paul, Minnesota, USA, Park Tool is the world's largest bicycle tool manufacturer.

A long-term dedication to quality, innovation, and customer service has made Park Tool the first choice of professional and home bicycle mechanics around the world.

Just visit your local bike shop - chances are that they will be using Park Tool tools for bike service / repair.

Related tags: Shimano Bottom Bracket Park Tool