The AP03 C5G1216 Adjustable Cushioned 5th Wheel to Gooseneck Adapter converts a trailer's kingpin for use with a gooseneck hitch.The sliding collar with set screws allows height adjustment between 12 inches and 16 inches from the top of the gooseneck ball to the kingpin plate.Includes chain.Towing capacity is 20, 000 lbs GVW with a tongue weight rating of 4, 000 lbs.Features 360-degree cushioned movement plus vertical articulation.Coupler locks with padlock.Installation requires no drilling or welding.Designed for compatibility with standard kingpin boxes on campers, RVs, and trailers.Not compatible with trucks having beds shorter than 6 feet or cushioned-style kingpin boxes.Fits models matching the OE number associated with this part.Verify fitment by comparing the OE number and illustrations provided with your vehicle's specifications.