The Wheeler XL F.A.T. Wrench with Complete Crowfoot Set is the ultimate kit for the in-home or professional gunsmith looking to build AR-15s and LR-308s with mil-spec or aftermarket components. The set includes the XL F.A.T. Wrench that adjusts from 10-150 ft-lbs., providing more than enough torque required to complete any AR-15/LR308 build function with precision and confidence. At the core of the kit are 5 multi-function crowfoot wrenches that perform 12 different tasks thanks to their innovative, dual-ended design.