Quick and Easy Installation: The lock and keys come with a mounting pad to protect your delicate glass, and you don't need to drill a hole, so installation is quick and easy. It slides easily over the edge of your glass door. 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 glass doors up to 5-8 mm thick, which easily attaches to most display cases. Protect Your Collectibles: If you have a fine antique or vintage teacup, or other collectibles, you can use this lock to protect them from children, guests, or other people, so that nothing gets damaged, lost, or stolen. Perfect for Businesses: This lock is perfect for businesses and home use. All retail environments with display cases will find this security lock an excellent addition to their operations. Outstanding Solution: Add style and security to stereo cabinets and display cabinets with glass doors. Protect your fragile, delicate treasures and collectibles with this lock. But no one will have access to your cabinet.