Check the listing for details. Curt SecureLatch Lunette Ring & Channel 40k lbs, 3" ID, 11-3/4" Channel Height. Color: Gray, Condition: New, Made in China. Listed at 256.95 USD. MUST READ FITMENT NOTE: INCLUDES LUNETTE RING #48626, CHANNEL #48651 AND HARDWARE. LUNETTE RING FITS 2-3/4" I.D. CHANNEL ONLY. U.S. PATENT# 5,527,356; CANADIAN PATENT# 2,823,001; AUSTRALIAN PATENT# 2014305601". || Description: Drop-in pin accepts lock to deter theft (turns 90 degrees while coupled) Flexible height adjustment for more drop or rise as needed Heavy-duty 3-hole bolt pattern with 11-3/4" x 2-3/4" channel Rated for 40,000 lbs. gross trailer weight 3" inside diameter fits pintle hooks, ball & pintle combinations or clevis bars Cast iron construction is austempered for superior strength and wear resistance Textured, dark grey teridium powder coat for a premium finish Bright gold zinc-plated pin for long-lasting corros .