Fits: Leland 7910, 7920, 7921. 5th Airborne sidewinder replaces your 5th-wheel trailer's king pin and alters the pivot point of your rig, enabling you to make up to 90-degree turns. Enclosed air spring in pin box absorbs shock and adjusts for a smooth ride. 5th-Wheel trailer's pivot point is moved an extra 22" toward the rear of your tow vehicle so that you can easily make 90-degree turns, even with a short-bed pickup truck. No need to get out of your truck, throw a switch, push a button or mount a 5th-wheel slider. Trailer tracks more closely to the truck for better driveability.