All load bearing fittings are forged and tempered. Designed with a heavy duty swagged tube body and one-piece handle. Our chain binders meet DOT specifications, the size, working load limit and breading strength are stamped on the handle of each binder. The entire assembly is powder coated. 3/8" - 1/2" To be used with 3/8" Grade 70 or 1/2" Grade 43 Chain. The working load limit is 9,200 pounds. Each unit weighs 13 pounds.