This is a Fully Automatic, Versatile, Stylish, and Super short bed solution for 5th Wheel Towing.

The 16K SuperGlide offers all the performance of the proven SuperGlide hitch line, but at a new lower price, and a weight rating designed specifically for those towing lighter weight trailers.

• The 16K SuperGlide moves up to 14" while making a turn - 50% farther than manually adjusted "slider" designs
• Works AUTOMATICALLY, while you drive and make short turns.
• Available with a choice of mounting styles
• Fixed base rails with universal mounting brackets for lower cost, or totally removable SuperRails with custom mounting brackets for specific vehicles.

Find more info here - Owner's Manual