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A heavy-duty combination lock or a padlock can secure outdoor storage, fences, self-storage units or lockers, keeping your belongings safe. When purchasing a combination lock, choose one …

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The meaning of LOCK is a fastening (as for a door) operated by a key or a combination. How to use lock in a sentence.

In more complex mechanical lock/key systems, two different keys, one of which is known as the master key, serve to open the lock. Common metals include brass, plated brass, nickel silver, …

Nov 10, 2025 · We evaluate the most popular models, installing and testing them in our homes to help you decide which one to buy. With an outstanding 4.5-star rating and an Editors' Choice …

August Smart Locks easily install on the inside of your door leaving the outside of your lock untouched so you can keep your keys. Great for homeowners and renters alike.

With AppLocker, you can hide and lock apps, secure your data, and enjoy the safest lock screen experience. Whether you want to use app lock fingerprint or password, AppLocker gives you …

Master Lock is recognized around the world as the authentic, enduring name in locks, combination padlocks and security products. Learn more about our extensive assortment of …

Lock definition: a device for securing a door, gate, lid, drawer, or the like in position when closed, consisting of a bolt or system of bolts propelled and withdrawn by a mechanism operated by a …