Park Tool BBT-4 Bottom Bracket Install Campag

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Park Tool BBT-4 Bottom Bracket Install Campag The BBT-4 is made for the installation and removal of 6-notch SC-S and AC-H cartridge cups used on sealed cartridge bottom brackets. T hese bottom brackets have six notches around the outside of each cup. The handle of the BBT-4 is vinyl coated for comfort. The major diameter of the tool is nominally 44mm, and the minor diameter 38mm. Show more