Barnetts Evac Decocking Bolt allows you to unload your crossbow quickly and safely without damaging one of your hunting bolts. By simply placing the bolt in the flight track, aiming your bow at the ground at a 45 angle and shooting, youll release all kinetic energy stored in your crossbow. And, at 500 gr., its suitable for use with even the most powerful equipment. Glow Tech fletching makes the cock vane easy to distinguish. 100% biodegradable construction. Evac Decocking Bolts are intended for a one time use. Imported. Length: 9. Cancer and Reproductive Harm- www.P65Warnings.ca.gov. Type: Decocking Bolts.