The Wheeler Crowfoot Wrench for standard and low-profile castle nuts is a professional-grade tool designed for the assembly, maintenance and modification of AR-15/LR308 firearms. Constructed from hardened steel, this wrench is engineered to withstand the demanding conditions of firearm building and maintenance tasks. Its precision-crafted design ensures an exact fit, providing the confidence needed to install handguards, muzzle devices and barrels efficiently. Whether you're a professional gunsmith or an enthusiast, this wrench is an essential addition to your toolkit, offering reliability and durability for all your AR-related projects. 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