Aligns to center hole in installations. Easy Under-Bed bolt-in installation. Rated for 25,000 lbs. gross weight capacity*. Passes SAE J2638 the toughest industry standard. Pop-In Ball. Complete Gooseneck Hitch. Includes Rail Kit, Gooseneck head, and Pop-In accessory kit. Rated for 25,000lbs. Mounts completely under the bed. Works with Reese Elite Series 5th Wheel Hitch.