Security-enhanced lock, easy to install. Bronze DS-IN-2U Auxiliary Lock, Screw-Fixed, DIY, Prevents Wandering, Prevents Mischief, Sliding Doors, Hinged Doors, Includes 2 Keys, For Security at Entrances, etc. - Brand: Nihon Lock Service - Model Name: Security-Enhanced Lock - Features: Aluminum, Easy to Install - Intended Use: For door and window security - Included Items: Keys, Mounting Screws, Instruction Manual Thank you for viewing.