2 Way Installation: With 2 metal pegs and 2 non-punching metal mounting plates, one is punching installation (hole caps provided) and the other is non-punching installation (the plates fixed are also provided) High Quality Material: The sliding deck latches are made of high quality zinc alloy. Better preservation and better wear resistance. With key: Each sliding door lock comes with 2 keys. These sliding patio locks come complete with all security fixing accessories. Easy to Use: The locks are easy to install and convenient to use, complete with all security fixing accessories including plugs of stainless steel screws Safety: This is a kind of patio window sliding door latches, to prevent the window from being opened accidentally, more safety for your child and the window, we suggest that you mount the locks at the top and bottom for maximum security, home security system. Overview: This necessary child safety equipment is used for most hinged doors and windows or sliding doors, easy to install and convenient to use, supplied with all safety fixing accessories, it prevents accidental opening of the window and protects the security of the house. Features: Locks u Universals perfect for most hinged or sliding doors and windows. Supplied with all security fixing accessories. We suggest that the locks are top and bottom mounted for maximum security. Each sliding door lock comes with 2 keys. Installation tips: 1. Please install the lock on the side of the window. 2. Mark the position of the fixed plates. 3. Drill holes on the alignment mark. 4. Secure the plates with the screw. Features: Color: White Width: 45mm. Height: 25 mm. Distance between screw holes: 32 mm. Contents: 2 sliding door locks. 4 keys. 4 caps. 4 fixed plates.