The FR-1.3 is designed to fit the most common tool fitting found on 5-to-10 speed bicycle freewheel systems, including many models made by Shimano®, Sachs Aris®, SunRace®, Dimension®, and DNP Epoch™. Features an enlarged thru-hole to accommodate 14mm solid axles. The 1" hexagonal base can be used in conjunction with a 1" socket or the Park Tool FRW-1. Heat-treated alloy tool steel construction for a lifetime of use.