CURT SecureLatch 2-5/16-Inch Ball and Pintle Hitch Hook Combination, 20,000 Pounds, Mount Required Model 48410CURT SecureLatch 2 5 16 Inch Ball and Pintle Hitch Hook Combination, 20,000 Pounds, Mount Required Model 48410 Enjoy automatic trailer coupling with the unique auto locking mechanism of this SecureLatch pintle hitch. Just back up to the trailer tongue the integrated striker plate helps stop and center the lunette ring. Drop the ring onto the ball and hook, and the SecureLatch mechanism automatically engages the primary lock. Just insert the secondary