Window Door Restrictor Cable, Security Lock And Key, Baby/Child Safety, Multiple Colors &ndash; Black Adds an extra element to your baby and child-proofing measures by limiting the opening of a window or door Easy to install, tools required are a screwdriver or drill, depending on the window/door Comes with a lock & key operated mechanism, self-tapping screws and a link to online instructions Restrictor can be mounted to UPVC, aluminum, wood, composite and metal profiles Use on double hung, casement and slider windows; balcony doors, guest room doors, etc.