Now, after more than two years of intensive development, MasterLock is proud to introduce a new padlock line that does all this and more.
Research proves it.
We listened to what our industrial and commercial customers told us they wanted in a padlock. And we asked questions. Master Lock Pro Series High Security and Weather Tough TM locks are specifically designed for industrial and commercial use. With a unique new look and a whole new level of performance, Pro Series offers you a difference, a difference in security , dependability , and convenience .