Check the listing for details. Curt SecureLatch Flush-Mount Lunette Ring (60,000 lbs, 2-1/2" ID). Color: Gray, Condition: New, Made in China. Listed at 237.95 USD. MUST READ FITMENT NOTE: INCLUDES LUNETTE RING AND DROP-IN PIN (MOUNTING HARDWARE NOT INCLUDED). 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) Vertically offset base allows ring to be flipped for maximum height adjustment Rated for 60,000 lbs. gross trailer weight 2-1/2" inside diameter fits pintle hooks, ball & pintle combinations or clevis bars Bolt holes spaced 4-1/2" apart 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 corrosion resistance Limited lifetim .