Parent can control the opening and closing authority of window, effectively prevents children from opening window It can be used in homes, bathrooms, offices, hotel and other place to effectively secure window, balcony door, patios door Equipped with a and a The locking of window effectively prevents theft Make of Aluminum Alloy, Enduring and wear-resistant Ergonomically and comfortably in the hand They can be quickly installed in just a few simple step and are stable and dependable after installation, Manufacturer: LiRRvb