The king pin lock has long been a mainstay of unattended trailer security protocols, but remained a vulnerable technology to bypass, remove or manipulate. Our Stainless steel king pin lock cannot be frozen and cracked like ductile iron or cast steel can be. It cannot be cut without a torch and it will withstand a ram by a tractors fifth wheel without snapping off. The lock cannot be pulled like most inexpensive king pin locks since it is designed to be a side inset rather than a bottom inset. The lock is easily cleaned and designed for rigorous out door applications. It will outlast all other king pin locks.For more info please go to:
http://www.secureaircargo.com/staticp..._ping_lock