Quick and easy to install: The lock and keys come with a mounting pad to protect your delicate glass, and you don't need to drill any holes, so installation is quick and easy. It slides easily over the edge of your door glass. Unique key system: The keys are not identical and are unique to each lock. With more than one lock, each key will be unique to that lock. This key system is suitable for door glass up to 5-8 mm thick, easily attaches to most retail displays. Protect your collectibles: If you have a beautiful antique or vintage teacup, or other collectibles, you can use this lock to protect them from children, guests, or other people, so that nothing is damaged, lost, or stolen. Perfect for businesses: This lock is perfect for business and home retail applications. Any retail business with display shelves will find this security lock an excellent addition to their operations. Exceptional solution: Add style and security to stereo cabinets and display shelves with doors