The Master-Fit 1-1/16"" Free-Float Barrel Nut Wrench is purpose built and specialized for precise fitment to confidently deliver torque to 1-1/16"" free-float barrel nuts. Titanium coated stainless steel construction provides tight tolerances for solid nut-gripping strength and enhanced no-slip tool control. When paired with the Master-Fit ½"" Drive Torque Wrench, this Master Grade combo will take your gun building experience to a whole new level. The Master-Fit ½"" Drive Crowfoot Wrenches also work with any standard ½"" drive wrench.