Two installation methodsThere are two installation methods: one is adhesive installation, super simple; The second is screw installation, super durable. In addition, screws and adhesives can be combined to achieve the best installation results. Reminder: five screws are included. When your baby grows up, use a hair dryer to heat the mounting surface for a few seconds, then easily remove the lock, also with no residue left on the furniture and appliancesHigh quality & Safe material Baby Safety Lock is made of eco-friendly and high-quality ABS material. non-toxic and has no odor. The Chain is Crafted From Premium Stainless Steel. After testing, this safety lock can hold up to 20 KG weight. Therefore it is difficult to be damaged by toddlers, durable and long-lastingAdjustable iron chain Saftey lock is adjustable in length and supports up to 7.8 inches in length. This adjustable safety lock can meet any length you need. It not only ensures the ventilation function of the window, but also protects the children in your home. It is not only effective for babies, but also effective for petsSafety Lock with key: Each safety lock is equipped with a key, turn the key, then chain will pop out and the lock is open. This package includes: 3 safety lock with 3 keysUniversal and Multiple UseGrateful for the adjustable length, you can use this safety lock on basically any furniture in your home. Our baby safety locks have a wide range of application, Not only suitable for most type of Windows such as (inner opening window, outer opening window, sliding window), but also suitable for doors, fridges, washing machines, cabinets, closet, waste bin,etc