Installation method: Attach the hook to the outside of the drawer and stick the drawer lock, then attach the buckle to the top inside. It will automatically click after the drawer is closed. To open the drawer, press the drawer lock spring to open it. Children cannot easily open it, ensuring the safety of your baby. Specifications: Name: Invisible Drawer Lock Safety Lock Material: ABS Category: Security Lock Color: Black, White Size: Approximately 6.5 x 3.5 cm Application: Drawers, cabinets, etc. White: 5 pieces Black: 1 piece Originally, there were 5 pieces each, but I am selling the remaining ones. Unused. Adhesive tape is sufficient for attachment, but you can also fix it with screws (screws are included). Each item will be individually packaged and shipped, including the box.