To install this product, simply attach the hook to the window frame and secure it with the provided screws. This product is ideal for homes with toddlers and young children, as it provides an added layer of safety by preventing windows from being fully opened. The is designed to be easy to install and use, making it a convenient solution for parents who want to ensure their children's safety. Made from durable materials, it is suitable for both carbon steel windows. The black color and universal long hook design make it a versatile and unobtrusive addition to any home. Features - Color: Black -Material:Carbon Steel - Size: 17.00X4.50X1.20cm/6.68X1.77X0.47in -Enhanced security: the window limiter that windows remain securely closed, offering peace of mind by preventing and enhancing home security -Durable construction: made from carbon steel materials, the window limiter is built to withstand daily use and harsh weather conditions, ensuring performance -Quick installation: with its hook mechanism, the window limiter can be easily installed without the need for any tools, making it user friendly and convenient -Versatile compatibility: this window limiter is compatible with a wide range of window types, including carbon steel windows, making it suitable for various settings -Childproof design: designed with children's safety in mind, the window limiter prevents accidental window openings, providing a secure environment for kids Package list: 1 x Set of Window Restrictor Latch