About this item

• Comprehensive solution for tight or seized bottom brackets with shallow tool engagement
• 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