Park Tool BBT-35-36 Bottom Bracket Tool

Fits 36-notch threaded bottom bracket tool fittings with a major diameter (outside of notches) of 51–53 mm and a minor diameter (inside of notches) of 50.7 mm, including Box® Two Oversized M35 and Praxis Works® M35 3/8" drive fitting A precision CNC-machined aluminum tool for the installation and removal of select threaded bottom brackets with 36-notch tool fittings, including Praxis Works® M35. Manufactured in-house by Park Tool, anodized for easy identification and featuring a ratchet/torque wrench-compatible 3/8" drive. NOTE: Not designed for use with impact drivers or other power tools.