The CURT SecureLatch adjustable lunette ring and channel set offers enhanced security and maximum versatility. Its integrated locking pin helps prevent coupling and theft when your trailer is left unattended, featuring holes in the bottom to accept a padlock. The pin can also be turned 90 degrees to allow you to hitch up your trailer. This lunette ring also offers flexible height adjustment. It can be moved up or down for more drop or rise as needed. The CURT SecureLatch lunette ring comes with an 11-3/4-inch tall x 2-3/4-inch inside width channel. It has a 3-hole bolt pattern. The lunette ring itself has a 3-inch inside diameter to couple to a pintle hook or ball and pintle combination, and it is rated for up to 40,000 pounds gross trailer weight. This SecureLatch lunette eyelet is made from austempered iron for superior strength and wear resistance, and it features a durable, dark grey teridium powder coat finish for resistance to the elements.