Real Avid Master-Fit Thin Castle Nut Wrench

The Thin Castle Nut Wrench is designed to work with most pistol buffer tubes and pistol braces. The Master-Fit Thin Castle Nut Wrench is purpose built and specialized for precise fitment to confidently deliver torque to castle nuts on pistol buffer tubes. 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.