The only single-use bar that locks and seals a cargo container! Made of 100% steel. Numbered steel braided aircraft cable with bullet tip is an integral part of the locking system. Two-toned baked on enamel finish, engraved markings on the J-Bar and Bracket, and plastics utilized at strategic points make it easy to spot tampering. Braided cable frays when cut, making re-welding impossible. Same numerical sequence appears on all three components for added security. Extended return on the J-Bar. Designed to fit most Swing Door Conveyances. (20', 40', 45', 48', 53'). Must purchase in lots of 20.