CURT SecureLatch Pintle Hook, 30,000 Pounds, Mount Required Model 48505CURT SecureLatch Pintle Hook, 30,000 Pounds, Mount Required Model 48505 Enjoy automatic trailer coupling with the unique auto locking mechanism of this SecureLatch pintle hook. Just back up to the trailer tongue the integrated striker plate helps stop and center the lunette ring. Drop the ring onto the hook, and the SecureLatch mechanism automatically engages the primary lock. Just insert the secondary safety pin and you're ready to tow. This unique