![Park Tool BB Tool Retaining Sytstem BBT-RS Park Tool BB Tool Retaining Sytstem BBT-RS](https://cdn11.bigcommerce.com/s-tpvx4esvgk/images/stencil/500x500/products/164302/433322/297219-9999222_1__01126.1708322104.jpg?c=1)
Bottom Bracket Tool Retaining System
Used with most Super B bottom bracket wrenches, 1/2″ driver. bottom bracket tool and some 3/8″ driver bottom bracket tools, ensuring that they are fully engaged with a threaded external cup bottom bracket to prevent slippage.
Fits threaded cup and thread-together bottom brackets with external cups; can’t fit cartridge and cup-and-cone bottom brackets.
Fits threaded cup and thread-together bottom brackets with external cups; can’t fit cartridge and cup-and-cone bottom brackets.