This CURT channel-mount lunette eye kit allows for secure coupling to a pintle hook or ball and pintle combination and features three height adjustment positions for precise trailer levelling. It features forged steel construction and boasts a gross trailer weight capacity of 12,000 lbs. (NOTE: Never exceed the lowest weight capacity of any towing component; i.e. the vehicle, hitch, trailer, etc). With a 3" inside diameter, this lunette ring fits a variety of CURT pintle hooks and ball and pintle combinations.