The PullRite Capture Plate is a required component of the SuperGlide fifth wheel towing system. This plate is attached to your trailer's skid plate. When you're hooked up into your SuperGlide hitch and ready to tow, it isolates the rotation of your trailer's king pin in the hitch. Movement and rotation are then transferred to the automatic cam action of your SuperGlide hitch, moving it away from the cab along its rails to prevent the trailer from contacting the cab of your truck. This specific Quick-Connect Capture Plate for your trailer's king pin box is designed for quick install and removal for your convenience. The PullRite 331725 Quick-Connect Capture Plate is used with Lippert's Helux pin boxes that are 13-3/16" wide. Isolates the rotation of your trailer's king pin in the hitch Designed for quick install and removal Used with Lippert's Helux pin boxes that are 13-3/16" wide | PullRite 331725 Quick-Connect Capture Plate for Lippert Helux