Park BBT-18 8-Notch Bottom Bracket and Lockring Tool - USA Made

The BBT-18 is a heavy duty investment-cast tool for removing and installing components with an eight-notch tool fitting, including select cartridge bottom brackets, as well as chainring lockrings on some e-bike drivetrains. Installs and removes the following components with eight-notch tool fittings: Shimano® Octalink® drive-side bottom bracket cups with external notches ISIS Drive bottom bracket cups including Truvativ® and Bontrager® Front chainring lockring for Bosch® Gen 3 and Gen 4 e-bike systems Front chainring lockring for Specialized® Levo Brose e-bike systems Tool specifications: 8 notches with a nominal outside diameter of 43.4 mm The hole in the center of the casting is 22.5 mm, and will not fit over 30 mm spindles Features 36 mm wrench flats Park Tools are made in the USA.