This heavy duty wrench was designed to work with YHM’s 1.375″-24 HUB mounting systems. On one side you’ll find a 3/4″ open ended wrench made to loosen/tighten Q.D. Mounts and Direct Thread mounts. On the other, a spanner made to fit around HUB adapters as well as a 1/2″ Torque wrench slot to help tighten things to a specific torque spec.Heat treated Melonite QPQ finish. HUB Spanner Wrench. 3/4″ Open Ended Wrench. 1/2″ Torque Wrench. Length: 7.75″. Weight: 5.792 Oz.. Works perfectly with YHM’s Phantom Q.D. mounting system