5th Wheel to Gooseneck Adapter, 12"~17" Adjustable Height, 20,000lb Tow Rating, 2-5/16" Ball, Compatible with RV & Camper, Model 12217 1. Universal Compatibility – Fit Most 2-5/16” Gooseneck Ball Mounts Compatible with almost all 2-5/16” gooseneck ball mounts for RV, camper, and trailer kingpin boxes. Note: Please verify your trailer's kingpin box and ball size before purchasing. 2. Heavy-Duty Towing Power – Built for Strength Rated for 20,000 lbs towing capacity and 5,000 lbs vertical load, ensuring reliable performance for heavy-duty towing. Made with high-quality materials for durability and long-lasting use. 3. Adjustable Height – Customizable Fit Features a fully adjustable design, allowing the adapter to be set between 12” to 17” from the top of the gooseneck ball to the kingpin plate. Ensures a perfect fit for various trailer and truck configurations. 4. Easy Installation & Secure Connection Includes grade 8 mounting bolts, washers, and lock nuts for a secure and straightforward installation. Equipped with a self-centering locking plate for added stability and safety during towing. 5. Customer Support & Satisfaction Backed by a 1-year warranty for your peace of mind. If you have any questions, feel free to contact us – our customer support team is available 24/7 to assist you.