Adjustable Iron Chainsafety lock is adjustable in length and supports up to 20cm 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 pets. Universal and Multiple Use Safety LockOur 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. It provides comprehensive child protection in homes, schools, hotels, and other environments. Fridge locks for children and door locks for children are also available to enhance safety in specific areas. High quality & Safe materialBaby 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 10KG weight. Therefore it is difficult to be damaged by toddlers, durable and long-lasting. Two Installation MethodsThis window restrictor locks have 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 appliances. Easy Operation: The dual-switch unlocking mode is specially designed for child safety. Just press and hold the side button while sliding the middle button down, unlock completed. Then the window can be opened completely as usual. If you want to lock it, just place the chain in place and sliding the middle button up. It is easy for adults to use but difficult for babies to open.