4 Pcs Window Restrictor Locks for Baby Security High-quality material construction provides durability and resistance to damage. Features a high-quality safety cable for enhanced home and child safety. Easy to install with included self-drilling screws and wrench; requires only a screwdriver or drill. Suitable for use on PVC, aluminum, wood, and composite doors and windows. Ideal for double-hung, casement, and sliding windows, as well as balcony and bedroom doors. Special design allows 19 cm of controlled opening for ventilation; window can be fully opened when cable is detached using the wrench. Cable can be removed from one end to allow full window access when needed. Sleek, flexible design with smooth lines; cable extends up to 18.5 cm. Equipped with a secure locking core to enhance door and window security. Package includes: 4 Pcs Window Restrictor Locks