Easy-to-use alternative to old-fashioned T-handle action wrenches is specifically designed to prevent damage to receiver when installing and removing barrels. Lets you torque a Remington 700 or Surgeon Rifles action as close as possible to the barrel threads to eliminate unwanted twisting or bowing of the action that can result in distorted bolt raceways and other expensive damage. Inserts in the ejection port; the two “ears” fit in the raceways at the front ring. Insert a ½" drive ratchet handle or torque wrench and tighten/loosen the action to the barrel. Works on any length action.