Increased Security Sliding door ratchet locks give an added security level to glass display cases, trophy cases, and retail cases. These locks are easily slipped onto the edge of the glass door, requiring no boring of holes. These locks are perfect for retail business and home applications. Any retail establishment with display cases will find this security lock a great addition to their business. Easily slips onto the edge of the glass for quick installation. Easy-to-Use Sliding door ratchet locks can be easily installed on glass cabinet doors, retail display cases, etc. up to 1/2” thick without drilling. Locks come with set screws and a cushioned lining to hold them securely to the glass. Easy Installation Sliding door ratchet lock is a perfect security solution that slips onto the edge of the glass door, requiring no boring of holes. Lock works on glass up to 1/2” thick (which is most retail display glass cases). Made of zinc alloy, the display case ratchet lock is easy to install on display cases and trophy cases and a disc tumbler keyway on the lock.