If you are securing transport chain for flatbed trucking or heavy hauling, this refers to the Crosby Lebus L-150 Standard Lever Type Load Binder (often cataloged or stamped with a "C-1" designation).Chain Compatibility: Designed for 1/2-inch to 5/8-inch transport chains. Capacity: Features a Working Load Limit (WLL) of 13,000 lbs. Build: Forged steel construction with a quenched and tempered handle that toggles away from the load for easy release.