Commercial Magnum brings an extra measure of assurance for perimeter, equipment and vehicle security To withstand the elements, Commercial Magnum is made with a stainless steel cover and a chrome shackle These durable padlocks extend use in any environment The octagonal boron carbide shackle is 50 harder than the hardened steel used on typical padlocks which increases resistance to cutting and sawing The dual ball locking mechanism improves resistance to pry and impact attacks