Unior Inner Bearing Puller Kit ToolA complete solution for removing the most common sizes of cartridge bearings used in bicycling. Included collets work with inner diameters ranging from 6. 5 to 36 mm. Complete solution for removing the most common size press fit bearings Expanding collets cover a wide range of bearing sizes 2. 2lb (1 kg) slide hammer provides enough force to extract nearly any bearing