Stainless A304 material with a magnesium shackle. Bolt cutters cannot cut this lock. Comes with 4 double notch cut reversible keys.
High alloy chain in a hexagonal shape. Heat treated. Shaped so a bolt cutter will be prevented from cutting through.
Feature a brass plated zinc diecast body for resistance to rust. The shackle is tempered alloy steel. They have a re-settable combination so each lock can be customized.