In industrial rigging and cargo control, the Crosby® A-1 Lebus® L-150 Standard Load Binder is a highly recognized tool. Function: A traditional lever-type tensioning device used to tighten transport chains over flatbed cargo. Compatibility: Typically rated for 3/8-inch to 1/2-inch transport chains. Manufacturer: Produced under the Lebus brand by Kito Crosby.