Chain Ratchet Binder. All load bearing fittings are forged and tempered. Designed with a heavy duty swagged tube body and one-piece handle. Our chain binder meet DOT specifications, the size, working load limit and breaking strength are stamped on the handle of the binder. The entire assembly is powder coated. 5/16" - 3/8" To be used with 5/16" Grade 70 or 3/8" Grade 70 Chain. The working load limit is 6,600 pounds. Each unit weighs 11 pounds.