Our lever binders are made with quality in mind. Our chain binders have the Size, Break Strength, & Work Load Limit clearly marked on the handle for quick and easy identification. These binders are made for 1/2" Grade 70 Transport Grade Chain. They may also be used for 5/8" Grade 43 Chain. If you use this binder with 5/8" Grade 70 chain, the binder will be weaker than the chain and therefore, becomes the weakest point of the entire assembly. We also carry a 1/2" x 5/8" Ratchet Chain Binder in stock and ready to ship fast!