Quick and Easy to InstallThe 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 slips easily over the edge of your door glass. Unique Key SystemThe keys are not identical, and are unique for each lock. With more than one lock, each key will be unique to this lock. This key system suitable for door glass up to 5-8mm thick, easily attaches to most retail display cases. Protect your collectiblesIf you have a nice antique or vintage teacup, or other collectibles, you can use this lock to protect them from children, guests or other people, so that nothing from being damaged, lost or stolen. Great for BusinessThis lock is perfect for business and home retail applications. Any retail establishment with storefronts will find this security lock a great addition to their businesses. Outstanding SolutionAdd 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 give you access to your wardrobe