How It Is Made: The Journey of the 1525 at the Master Lock Plant in Milwaukee, WI. See the precision manufacturing that makes the world's most popular combination padlock
1525/1502 BlackGuard® Anti-Shim: Animated video describing how BlockGuard® Anti-Shim Technology deters shimming in our 1500 series combination locks
Built-In Combination Locks
1690 Technology: Animated video describing how Wrap Around Latch™ Technology works
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