High quality: Double protection inner core, effective lifespan up to 10 years +. Easy and quick to install: Easy to install without hurting your hand. Supplied with fixing screws and key. Suitable for many types of materials: Suitable for UPVC, wood, aluminum and metal. Provides an added benefit: High quality cable limiter for more home safety, health and safety and baby / child safety. Suitable length: Length is 18cm. Perfect for home, public, hospitals, hotels, schools and commercial applications. Product description Size: 4u. Made of high quality zinc alloy, able to withstand greater pressure, not easy to damage. Self-drilling screws provided, easy to install, just a screwdriver or drill. U. When the cable is in place the window opening distance is limited, using the wrench the cable can be pulled out from one end and the window can be opened fully. Limiting the window opening capacity prevents burglars from being able to fit most types of windows and small doors. Baking paint