Description: The Lockable Cable Window Restrictor is a simple to fit device that limits the distance a window can open, ideal for home & commercial safety. When the cable is in place the distance the window can open is limited, by using the key the cable can be removed from one end and the window can be opened fully. Suitable for most types of windows and small doors. Perfect for home, public and commercial applications Discourages burglars and intruders Designed specifically with child safety in mind. Window Style: Double Hung Screws: Included Main Colour: White Size: About 21.5*4.2*3cm Material: Zinc Alloy, UPVC Quantity:8pcs Suitable For: UPVC, Wood, Aluminium & Metal Features: Key Operated,Child Safety Security Locking Package Included: 8 x Window Door Restrictor