Package Included: 2 x Window Covers, 2 x Mounting Hooks, 4 x Screws. Our window latches plug directly into your original door handle and install directly without the need for additional mounting screws. Sturdy and Durable: The glass lifter is 10.5cm long and the windproof hook is made of high quality stainless steel and coated with white to ensure rust resistance and durability. 【Easy to Install】 The window lock is easy to install. Comes with 2 screws each, you only need a simple screwdriver to tighten, easy to use, no drill is required to drill holes. 【PROTECTION】 Also suitable as cat and child safety locks, safety locking systems for turning, tilting and turning windows that open inwards. Safely ventilate the room and introduce fresh air. [Scope of application] PVC window openings for sliding windows or sash windows. Allows the window to lock at 4 different opening angles and prevents accidental closing. Suitable for all standard plastic, wood or plastic doors and windows