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The BBT-18 is a heavy duty, investment cast tool for installing and removing the following:
• Shimano® Octalink® drive-side bottom bracket cups with external notches
• Select 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
• Front chainring lockring for SRAM® e-bike systems
The BBT-18 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.
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➤ About Park Tool:
Park Tool has been manufacturing bicycle specific tools since 1963. Based out of St. Paul Minnesota, we are the world's largest bicycle tool manufacturer. A long-term dedication to quality, innovation, and customer service has made Park Tool the first choice of professional and home bicycle mechanics around the world.
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