CURT SecureLatch Receiver-Mount Pintle Hook, 2-Inch Shank, 14,000 Pounds Model 48405CURT SecureLatch Receiver Mount Pintle Hook, 2 Inch Shank, 14,000 Pounds Model 48405 The CURT SecureLatch pintle hook makes coupling to your trailer virtually automatic with its innovative auto locking technology. The auto lock latches the lunette ring onto the hook without any manual coupling required. Strike the integrated back plate, drop the lunette ring down onto the hook and you're ready to tow just insert the secondary safety pin! This