Ratchet load binder To tighten chain, typically for cargo securement Meets U.S. D.O.T. 393.100 -393.102 requirements for use with chain Ratchet lever Allows for easier adjustment of tension and greater range of take-up For chain size 3/8" (System 7) and for chain size 1/2" (System 4) Imported Order unit is "Each"