Master Lock Key-Controlled, 3/4 inch shackle, Combination Padlock, black

Master Lock continues to lead the market with innovative security solutions. Now we have added NEW Block Guard technology to our ML 1525 security combination padlocks. Master Lock's new, enhanced lock is an innovation on the ordinary padlock. Hidden inside the lock is a unique, patent-pending latching technology that provides additional security. This technology resists tactics that have been used to violate the locks, whether through the use of special tools or specialized locksmith techniques that cannot be detected. Block Guard technology advances security to the next level. Master Lock is the only lock in its class offering Block Guard technology. The lock automatically scrambles when closed to prevent accidental opening. The dial automatically locks under shackle tension to prevent "feeling out" the combination. The ML 1525 cannot be opened with a shim tool. Keep your student possessions secure! Colored dials are available in order quantities of 50 locks or more.