Real Avid created the most comprehensive all-in-one Armorer's Torque Wrench Kit for rifle enthusiasts looking for serious dedicated tools. The Master-Fit single-purpose crowfoot wrenches are specialized for precise fitment and manipulation of MIL-SPEC and free-float barrel nuts, muzzle devices and castle nuts. These crowfoot wrenches feature titanium coated stainless steel construction provides tight tolerances for solid nut-gripping strength and enhanced no-slip tool control. When paired with the heavy-duty Master-Fit Torque Wrench, it takes Gun DIY building to a new level of Master Grade quality and precision.