Quick and easy to install The lock and keys come with a mounting mat to protect your fragile glass, and you don't need to drill a hole, so installation is quick and simple. It easily slides over the edge of your door glass. Unique Key SystemThe keys are not identical, and are unique to each lock. With more than one set of locks, each key will be unique to that lock. This key system fits door glass up to 5-8mm thick, which easily attaches to most retail display cases. Protect Your CollectiblesIf you have a beautiful antique or vintage teacup, or other collections, you can use this lock to protect them from children, guests or others, so nothing gets damaged, lost or stolen. Great for BusinessThis lock is perfect for both business and retail home applications. Any retailer creating with display cases will find this security lock a great addition to their businesses. Exceptional solutionadd style and security to stereo cabinets and display cases with glass doors. Protect your fragile,