The Cartridge Bottom Bracket Tool from Topeak is a professional shop grade tool for the removal and installation of Shimano® and ISIS Drive® bottom bracket cups. It fits both a 24mm wrench and a 1/2” socket for tool interface flexibility.

• Made from one piece with a particularly flat profile for easy mounting of the bottom bracket (cartridge bearing) with attachments for 24mm wrenches and 1/2" ratchets
• Compatible with: Shimano Octalink (BB-ES..), ISIS (BB-UN..)
• Bottom brackets w/ 20 teeth
• Tool material: CrMo steel
• Size: 5.3 x ø3.2 cm / 2.1” x ø1.3”
• Weight: 102 g / 3.59 oz