Package includes2 window lids, 2 mounting hooks, 4 screws. Our window latches can be inserted directly into your original door handle and can be attached directly without additional mounting screws. Sturdy and DurableWindow Regulator Length 10.5cm, Windproof Hook Made of high quality stainless steel with white coating to ensure it is rust-proof and durable. Easy InstallationWindow locks are easy to install. Each screw comes with 2 screws, you only need a simple screwdriver to screw it, easy to use, no need a drill to drill. ProtectionAlso suitable as a cat and child safety lock, safety lock system for turning and tilting and turning inward opening windows. Ventilate the room safely and bring in fresh air. Scope of applicationThe PVC window opening for sash or double-hung windows. Allows windows to be locked open at 4 different opening angles and prevents accidental slamming. Suitable for all common windows and doors made of plastic, wood or