The Dutton-Lainson 970 Coupler is designed for 1-7/8 x 3 inch connections and comes with a pin and chain for secure attachment. This coupler is built for strength and reliability, making it suitable for a variety of towing applications. Constructed from high-quality materials, it meets industry safety standards, ensuring a dependable connection. The included pin and chain enhance security during transport, making it ideal for trailers and other towing setups. This coupler is a practical choice for anyone needing a reliable towing solution.