The Wheeler Crowfoot Wrench is a professional-grade tool designed for AR-15, AR-10 and LR308 Mil-Spec Barrel Nut applications. Constructed from hardened steel, this wrench is engineered to withstand the demands of assembly, maintenance and modification of AR platforms. Its precision-crafted design ensures an exact fit, enabling users to confidently install handguards, muzzle devices and barrels. Whether you're building or maintaining an AR, this wrench provides the reliability and durability needed for any task. Dual-ended wrench design offers multiple functions per tool Works with XL F.A.T. Wrench and any other 1/2" drive torque wrenches Constructed from professional-grade, hardened steel, this product endures extreme use and resists bending The black oxide finish protects against rust and corrosion, thereby prolonging the lifespan of the wrench