about this item Ensure child safetyChild safety lock adopts double locking design which prevents children or pets from opening the doors. It helps keep them in one place avoiding potential dangers. High Quality MaterialBaby Safety Lock Blocks ABS Door Block is more durable and heat resistant. This material is environmentally friendly and odorless. You can use without worrying about baby's health. Creative DesignDoor lock for child safety of the door handle are 180 rotatable. This design can help you fix the door handle better without loosening it. Easy to installNo tools, no drilling installation. Our door locks are equipped with 3M adhesive and you can attach them to your door or cabinets in seconds. Multi-useChild safety locks not only for most buttons door handle but also for dog, cat, window, cupboard, faucet, pantry. Product description The door handle lock has been developed to prevent the child to open the door alone if the adult is not careful. This baby safety lock prevents babies and pets from opening the door, but adults can still access it easily by simply moving the lever. Product Parameters: Material: ABS Feature: Unlock double button Color: black Product size: 12*50*7.5cm Product Features: -Adults easily open with hand -Made of hard ABS plastic and durable -Built for years of daily use -Super easy installation in seconds -3M adhesive backing holds firm < p>-No tools or drilling required -Includes installation and usage instructions with color photos Manual: 1. Tear off the 3M adhesive 2. Attach the door safety lock to the corresponding position on the door handle 3. Press and hold for about 10 seconds 4. The only way to lock and unlock is to use the double buttons on each side. Package includes: 4 Children's door lever lock