This principle is the extension of the external traction tool.
The sizes are: 0.35inch(9mm).0.43inch(11mm).0.55inch(14mm).0.74inch(19mm).0.91inch(23mm), Included: five sockets, 3 posts.The bearing can be disassembled from 0.35inch(9mm) minimum inside diameter.
Put the head of the tool in the inner bearing ring, then screw into the shaft.The tool head to open, and hook the inner ring of the bearing.Then turn the shaft.