Package includes: 2 window openings, 2 mounting hooks, 8 screws. Enough quantity for your daily needs. Adjustable opening width: Our interior window locks can be adjusted to 5 different opening widths, so you can adjust according to the width you want. Very practical for daily use. Quality material: These window restrictors are made of stainless steel, with good performance and strength, much safer and more durable, not easy to break or rust, can withstand greater pressure and have a long service life. Easy to install: Our window latches can be directly inserted into your original door handle and can be fixed directly without additional mounting screws. Application: Our window retractor is suitable for all kinds of sliding windows and casement windows, and can help repair windows.</p>