Park Tool BBT-18 Bottom Bracket Tool

J&R Bicycles, Inc. Verified independent store

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The Park Tool BBT-18 Bottom Bracket Tool has 8 notches with an outside diameter of nominally 43.4mm. The inside-to-inside width is approximately 38mm. Each notch is approximately 3 .9mm wide. The hole in the center of the casting is 22.5mm and will not fit over the 30mm spindles. It can be used with a 36mm socket or open-ended wrench. The BBT-18 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 ISIS Drive™ Show more