Description: Quality Material: Sliding Window lock is made of quality iron and rubber material, precision casting and durable, longer service life.Function: Safe Window lock for children, keep curious toddlers away from windows, doors, etc. Avoid accidental opening of children.Simple Installation in Seconds: Adjustable Window Stopper is easy to install, without any additional tools.Compact Size Design: Window locks length: 2.36 inch, width: 1.57 inch, height: 0.87 inch. Packing: 4 Pieces. Wide Application: Window Stop Suitable for families, hotels, schools, and girl travelers. Protect the kids, elders, and even pets in your family. Specification: Material: Iron and RubberSize: 4cmx6cmx2.2cm/1.57inchx2.36inchx0.87inch Package Includes: 4Adjustable Sliding Window Lock Note: Please allow slightly errors due to manual measurement and different monitors.