[Good Material] This window restrictor is made of UPVC and metal material, which is very sturdy and to use. It is equipped with key, easy to open and close. [Keep Kids Safety] This window locks child safety is designed to restrict opening distance of windows and doors and reduce of falling out. It can keep kids and pets safety, suitable for most types of windows and small doors. [Easy Installation] It is very easy to install this window security restrictor. When the cable is in place, the distance the window can be opened is limited, and by using a key, the cable can be removed from one end and the window can be fully opened. [Widely Uses] This window restrictors for upvc is also suitable for many cabinets, drawers and doors. It discourages burglars and intruders and keep your home safety. [After-sales] If you have any questions, please get in touch with us, our service team will provide you with a professional and satisfactory service., Weight: 0.9038952742 pounds, Manufacturer: NIHUIFDPY