The Shimano TL-AF20 cone mounting tool for Alfine internally geared hubs is used to install the right cone of Alfine 8-speed internally geared hubs such as SG-S500, SG-S7000 and SG-S7001-8. It can also be used for Nexus SG-C6001-8CD. Thanks to hardened steel, the tool is particularly robust and durable.