The Park Tool BBT-35-12 Bottom Bracket Tool, click to enlarge
More Images

Item # BBT-35-12

/ Tools / Crank & Bottom Bracket

Bottom Bracket Tool — 12-Notch

A precision CNC-machined aluminum tool for the installation and removal of select threaded bottom brackets with 12-notch tool fittings, including Praxis Works® M30. Manufactured in-house by Park Tool, anodized for easy identification and featuring a ratchet/torque wrench-compatible 3/8" drive.

View Product Details


BBT-35-12 Features

  • Fits 12-notch threaded bottom bracket tool fittings with a major diameter (outside of notches) of 48–50 mm and a minor diameter (inside of notches) of 46.3 mm, including Praxis Works® M30
  • 3/8" drive fitting

Not designed for use with impact drivers or other power tools.

Product Fitment

Below is a filterable table of bottom bracket models the BBT-35-12 is compatible with. For a full list of tool compatibility, see our Bottom Bracket Tool Finder.

Praxis Works® Threaded & Thread-Together M30
Praxis Works® Threaded T47 Inboard

Parts & Accessories


Bottom Bracket Tool Retaining System

BBT-35-12 Bottom Bracket Tool - 12-Notch 48mm