Description: Quality Material: The sliding window lock is made of quality aluminum, ABS, and iron material, precision casting, longer service life.Application: Window Limit Stopper can control the window partially open or closed so as that ensure kids' safe, and keep curious toddlers and children away from window, doors, etc.Adjustable Mount: Fit on window track spacing from 1.1cm-2.3cm/0.43inch-0.91inch, in case affecting the stability of the security lock.Simple Installation in Seconds: Easy to install, without any additional tools.Essential Nice Helper: Window Lock Stopper is suitable for families, bedrooms, kindergartens, offices, hotels, schools, and girl travelers. Protect the kids, elders, and even pets in your family. Specification: Material:Aluminum, ABS, IronSize: 6.4cmx4cmx1.6cm/2.52inchx1.57inchx0.63inch Package Includes: 1 Adjustable Sliding Window Lock Note: Please allow slightly errors due to manual measurement and different monitors.