Check the listing for details. Excalibur Crossbow Charger EXT Crank Cocking Aid. Color: Black, Condition: New. Listed at 279.99 USD. CHARGER EXT™ CRANK COCKING AID The Charger EXT will dramatically reduce the draw effort of any Excalibur crossbow to as little as 12 pounds while guaranteeing consistent string alignment. Unlike loud, cumbersome, permanently mounted cranks, the Charger EXT can be detached in seconds and features an ambidextrous, removable handle and a spring-loaded retractable cable for quick and easy storage. When the time comes to unload your crossbow, the Fail-Safe Strap will add support and security, allowing you to quietly and safely de-cock your Excalibur. The Charger EXT is constructed of high-strength aluminum alloys to reduce weight and ensure years of trouble-free service. The Charger EXT fits on TwinStrike, Micro, and Bulldog Series crossbows. Some previous model crossbows can be retrofitted to accommodate the Charger EXT. For information on which models can be converted to use the Charger EXT, and conversion instructions, please contact Excalibur Crossbow Customer Service.