Park Tool BBT-18 Bottom Bracket Tool for 8-Notch ISIS Cups Light & Electronics Transitions are made easy by

Transitions are made easy by an optimized organisation & quick access to gear

Provides strong mount while also allowing easy removal of downriggerCompatible with: MAGNUM

Unless you're elbow deep in a mud hole on the Mississippi River

Veteran ice climber Alex Krawarik and mountain guide Jason D

flexible and solid for climbing and mountaineering

Park Tool BBT-18 Bottom Bracket Tool for 8-Notch ISIS Cups Light & Electronics Transitions are made easy byThe 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. BBT 18 FEATURES 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