The guardian stick on safety lock is a unique, all purpose safety lock. Similar to the WIndow guardian, the guardian stick on lock uses high quality 3m adhesive instead of screws brilliant. This design allows for more versatile applications, including places where screws/hardware cannot be or would rather not be used. Some unique places this lock can be installed are on glass doors and windows, such as outward opening casement windows and outward opening doors. No screws also makes it much easier to instal in metal casework and will not cause damage to glass or other surface where installed. Available in white.