If you are replacing a broken coupler on your trailer or installing a new one on a trailer you are building, curt has dependable couplers you can trust to keep your tow load latched on tightly. Selecting the right trailer hitch, ball-mount and trailer ball to manage the weight of your trailer is not the only important aspect of towing, you also need a trailer that can stand-up to the road ahead. That means equipping it with a coupler that is built to go the distance. Curt straight-tongue couplers, featuring our posi-lock latch, are the most common type of trailer coupler. With a mounting channel designed to fit onto a straight trailer tongue, the posi-lock coupler is easy-to-install. It is made from hardy steel construction and has a durable zinc finish to protect from corrosion, wear and tear. The lockable latch mechanism on curt posi-lock couplers is easy-to-operate and adjusts by tightening or loosening a simple bolt. This curt straight-tongue coupler features a gross trailer weight capacity of 2000 lb and a tongue weight capacity of 200 lb. It has a 2-1/2 in channel and fits a 1-7/8 in Dia trailer ball. All curt couplers include a limited lifetime warranty and feature a lockable latch to give you peace of mind.