Fitment and Product Information. Pullrite 331711 Quick Connect Capture Plate for Lippert 1621 HD 12 3/4 New. Country of Origin: USA. Made in the USA. All Superglide hitches require the installation of a capture plate in order for the hitch to function properly. Designed for use with Lippert 1621 HD pin boxes that are 12-3/4. The Capture Plate’locks out’ the king pin box, preventing turning on the king pin. Enables the SuperGlide to rotate and slide back, preventing the trailer from contacting the cab of your truck. Reliable product that helps towing process easy and comfortable. Designed for a safer, stronger and better performance. Mounts to your king pin with set screws. King Pin Model: 1621 HD. King Pin Measurement A: 12 3/4. King Pin Measurement B: 4. King Pin Measurement C: 8 7/8. Video: New SuperLite from PullRite. PullRite Makes Extraordinary Hitches. PullRite has been designing and manufacturing extraordinary hitches for over 30 years. We are recognized as the leading innovator in the design and manufacture of fifth wheel hitches, short-bed truck hitches and travel trailer hitches. PullRite strives to go beyond expectations in developing new technology, crafting quality products with care and providing superior customer service. We’ve combined skilled engineering and ingenuity to make the safest, strongest hitch you can find. We also maintain the highest levels of quality and craftsmanship in our US facilities. Your hitch is the most important connection – the critical link – between your truck and trailer. Protect your investment, secure your safety and tow more comfortably by choosing a better hitch. WARNING : This product can expose you to chemicals including Styrene, which is known to the State of California to cause cancer.