Compatible with press-fit bottom bracket shells with an inner diameter of 42mm and a width of 68–73mm. Designed for cranksets with a 24mm spindle (Shimano) or 22/24mm stepped spindle (SRAM GXP). *Important: This bottom bracket is NOT compatible with traditional 30mm spindles commonly used in original BB30 systems. Please confirm your frame's bottom bracket shell and spindle measurements before ordering. Thread-together design that eliminates creaking noise and simplify installation and maintenance Sealed bearings deliver reliable performance and long service life Note: a 16-notch, 44mm OD bottom bracket tool is required to install the BB. The tool is not included. O-rings to prevent water, dirt intrusion and achieve long service life Introducing our versatile bottom bracket, designed to fit frames with a width of 68-73mm and 42mm inner diameter (press-fit) and crank spindle in 24mm diameter (Shimano standard) or 22/24mm diameter (SRAM GXP standard). This threaded-together design eliminates creaking noises and simplifies installation and maintenance. The sealed steel bearings ensure reliable performance and longevity, while O-rings prevent water and dirt intrusion for extended service life. Please note that a 16-notch, 44mm OD bottom bracket tool is required for installation (not included). Verify your frame's BB shell sizes before purchase to ensure a perfect fit.