*M Mission RSD Crank Aid 1. EASY TO USE ON CROSSBOWS: Yound or old anyone can easily manage for a shot or two, or maybe even an entire range session. 2. FASTER LOADING SPEED: You can prepare your next shot within thirty seconds with RSD crank. 3. PULLEY SYSTEM: Attached in the pull rope of this device are two string clips and handles. It also comes with a pulley system designed to improve its mechanical advantage. The pulley system also allows you to use only half of the strength needed in cocking the crossbow. 4. SIMPLE COCKING MOTION: The major advantage of crank cocking device is that you will never have a hard time drawing it back 5. 100% MONEY BACK GUARANTEE : At CONQUEROR OUTDOORS we value our customers and stand behind our products 100% , which is why we offer a 100% money back gurantee if you are unsatisfy for whatever reason.