1978-1997 Dana 60 Hardcore Locking Hub, , 35-Spline, 79-91 /78-97 /1979-1993 (YHC70001)These heavy duty lockouts feature all steel construction, including Chrome Moly internals, for the ultimate in durability & strength. The hubs will not disengage under high torque applications and defaults to the locked position under use. Engagement comes from just a 1 3 turn of the all steel, low profile bezel. The Yukon Hardcore locking hubs are not only great looking, but features a low profile design to minimize impact with obstacles, and a