Park Tool BBT-135-12 Heavy Duty Workshop Bottom Bracket Tool
Constructed from precision-machined 4140 steel, the BBT-135-12 is a heavy duty tool for the removal and installation of select bicycle components with a twelve-notch tool fitting
Extra-deep body to accommodate extra-wide spindles and low-profile walls at the point of engagement for recessed lockrings
Three methods of tool engagement—a 3/8 inch drive fitting, a 1 inch socket fitting, and 36 mm spanner flats, allowing you to take on even the most seized components
For added stability, the BBT-118 features integrated threads for use with the Park Tool BBT-RS Bottom Bracket Tool Retaining System or GPS-1 Guide Pins (each sold separately) to anchor the tool in place whilst you work
 • Fits 12-notch threaded bottom bracket tool fittings with an external diameter of 48–50 mm and a minor diameter (inside of notches) of 46.3 mm
 • This includes Praxis Works M30 units
 •Intended for extraction, for installation we recommend our non-marking Aluminium BB tools
 • Not intended for impact-driver use
 • Covered by Park Tool's legendary limited lifetime warranty