Shimano Alfine TL-S700-B Inner Cable Fixing Bolt Installation Tool Description: The Shimano Alfine TL-S700-B Inner Cable Fixing Bolt Installation Tool is a tool that is designed to make it easier to dial in the shifting performance of an Alfine internally geared rear hub. This tool, which is specifically for the 8-speed internally geared Shimano Alfine hubs, will ensure that there is the right amount of cable between the end of the housing and the cable fixing bolt for the optimal shifting performance and access to all of the available gears.