Key Features: The SBK-1 is a professional level kit for installing and removing cartridge bearings in bicycle suspension pivots,A comprehensive set of 27 precision-machined hard-anodized guides enables compatibility with a wide range of bearing inner and outer diameters,Combined with our proven bearing press design, the SBK-1 quickly and easily pushes ,the old bearing out of the linkage, and reinstalls the new bearing precisely and squarelyOrganized in a convenient storage case to keep everything in one place,NOTE: For bearing extraction, the SBK-1 requires a minimum of 3mm of flat linkage structure outside the bearing to support the extractor cup/drift. For bearings without this flat structure, consider using the Park Tool SHX-1 Slide Hammer Bearing Extractor.