Bottom Bracket Tool - BBT - from Park Tool USA - 18 bottom bracket tool
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The BBT is a heavy duty, investment cast tool for installing and removing the following eight-notch bottom bracket cups: Shimano® Octalink® right cup with external notches. The BBT has 8 notches with an outside diameter of nominally mm. When its time to replace your Shimano Octalink bottom bracket, reach for the Park Tool BBT Bottom Bracket Tool to make the job a breeze. It uses its eight.