Zinc Trailer Safety Chains|Class 1 | Single Chain (27″)|Class 2 | Two Chains (36″)|Class 3 | Two Chains (27″)

Keeps trailer attached if hitch fails.Closed, spring loaded hooks meet D.O.T. regulations. Class 1is a single chain with a hook on each end (27") Class 2 is two chains with a hook on each chain (36") Class 3 is two chains with a hook on each chain (27")