Park Tool BBT-RS Bottom Bracket Tool Retaining System

Applies consistent, adjustable pressure to nearly any Park Tool bottom bracket tool, ensuring full engagement with the tool fitting and preventing slippage Compatible with threaded cup, thread-together, cartridge, and cup-and-cone bottom bracket styles Compatible with Park Tool socket-style aluminum bottom bracket tools that feature internal threading Also compatible with any bottom bracket tool with a handle or external wrench flats Comprehensive solution for tight or seized bottom brackets with shallow tool engagement