Usage Tips:HOME SAFETY: Outward Window Lock helps limit the opening width and helps keep your children safe and prevents them from slamming their fingers or falling.PERFECT FOR MULTI -STOREY HOMES and APARTMENTS: Window safety is one of the most important parts of childproofing your home especially if you are living in a high level of a buildingEASY TO INSTALL: Our Window Latches are a great addition to your home safety checklist and are easy to install with the included installation template and screws.FITS MOST OUTWARD WINDOWS: Outward Latch can be easily fitted to most outward opening windows including wooden framesADJUSTABLE WIDTH OPENING: Our Inward window locks can be adjusted from 0-100 mm, there are multiple stops between 0-100 mm so you can set according to your desired width.color: WhitePackage Quantity: 1" Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement.