The Wheeler 1-1/8 inches and 1-1/4 inches AR-15/LR308 Barrel Nut Crowfoot Wrench is a robust tool designed for compatibility with a wide range of aftermarket handguard barrel nuts. Constructed from professional-grade, hardened steel, this wrench is engineered to endure the demands of AR-15/LR308 assembly, maintenance and modification. Its precision-crafted design ensures reliable installation of handguards, muzzle devices and barrels, providing users with the confidence needed for any AR building or maintenance task. Compatible with standard aftermarket handguard barrel nuts Dual-ended wrench design offers multiple functions per tool Works with XL F.A.T. Wrench or 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