The Class 4 Safety Chain From Buyers Products Is Rated To 10,000 Or 15,000 Lb Depending On The Model. The Chain Is Zinc-Plated To Withstand Corrosion. Available In A Range Of Sizes And Lengths, The Chains Feature Forged Slip Hook Connectors. Use Two Safety Chains With A Total Holding Capacity Of At Least The Total Weight Of The Trailer And Its Contents. The Chains Are Designed For Towing Only, Not For Lifting.