Why Need It---No more kids or pets locking you or themselves in a room; Prevent children from entering specific rooms like toilets or warehouses without adult supervision; prevents children from playing with the door and pinching their fingers. Multifunctional: The child safety door locks are designed to work on all door levers! Whether it's to prevent your little ones from opening doors or to keep your pets safe in your home, the door lock is designed to serve multiple purposes. Sleek and Sophisticated: The child safety lock, with its simple design, perfectly blends in with the look and feel of your interior. The locks fit all types of door levers and are easy to use. Easy to Install: This set of 4 child-proof door locks can secure your doors in less than a minute. Easy to install and absolutely no tools required. No need to drill holes, security locks feature pre-applied 3M adhesive, making them extremely durable. Hassle-free removal: The child safety lock for doors can be easily removed without damaging your furniture. Just heat the installation surface for a few seconds using a hair dryer, then remove the lock. Note: The data are all measured manually, please allow error of 1-3cm Due to differences in light and display, there may be color differences, please refer to the actual item received.