Park Tool Bottom Bracket Tool - 16 Notch (BBT-49.3) size-6mm The Park Tool OBW-4 is

The Park Tool OBW-4 is a specialty bicycle wrench designed for the installation and adjustment of side pull and dual pivot bicycle rim brakes

Anti-corrosion treatment

Dual-injected rubber outsole

Easily removes grease

But bibs can also be a challenge when nature calls

Park Tool Bottom Bracket Tool - 16 Notch (BBT-49.3) size-6mm The Park Tool OBW-4 isAbout Park Tool Bottom Bracket Tool 16 Notch (BBT 49. 3) A precision CNC machined aluminum tool for the installation and removal of select threaded bottom brackets with 16 notch tool fittings, including Shimano XTR BB93, Dura Ace BB9000, and Token bottom brackets. Manufactured in house by Park Tool, anodized for easy identification and featuring a ratchet torque wrench compatible 3 8" drive. The BBT 49. 3 features integrated threads for full