This carbon steel bottom bracket wrench is designed for the installation and removal of center lockrings and BB cups on bicycles. It combines durability with a comfortable, ergonomic grip to help you work efficiently. Key benefits - Ergonomic and comfortable: long-handled design with a grippy grip to reduce fatigue and improve control during disassembly and installation. - Portable and compact: lightweight and easy to carry in a toolkit or bag for on-the-go bike maintenance. - 3-in-1 with 3 holes: three-hole design for multiple fit options, enabling compatibility with different BB cups and center lockrings. - Strong and durable: built from carbon steel for high strength and long service life in demanding workshop use. - Efficient performance: provides reliable leverage for tight fittings and smooth installation or removal of BB cups and center lockrings. Specifications and features - Material: carbon steel - Design: 3-in-1 tool with 3 holes for multiple fit options - Function: installation and removal of bicycle BB cups and center lockrings - Grip: ergonomic, long-handled grip for better leverage - Intended use: suitable for heavy workshop environments requiring high strength and durability Compatibility and applications - Compatible with common bottom bracket cups and center lockring configurations that use the 3-hole multi-fit design - Ideal for professional workshops and serious home garages handling road bikes, mountain bikes, and other bicycles with BB cups and center lockrings Use scenarios - Replacing or servicing bottom bracket cups on road and mountain bikes, where secure torque and reliable engagement are required - Installing or removing center lockrings during crankset maintenance or BB cup replacement - General bike maintenance in a workshop or home garage, especially when multiple BB cup styles are encountered This tool provides a straightforward, reliable solution for installing and removing BB cups and center lockrings with a core focus on strength, durability, and ease of use.