Features: Without further installation tools, it may be smoothly applied in maximum environments; air movement can be stepped forward by way of keeping windows partly open and closed, whereas stopping children from mountain climbing and falling out of windows. Specifications: Material: Aluminum alloy Scope of application: screens Size: (B)60*25*25mm/2.36*0.98*0.98" Notes: Due to the several visual display unit and light-weight effect, the actual coloration of the object is probably barely diverse from the colour showed at the pictures. Thank you! Please enable 1-3mm measuring deviation due to manual measurement. 2 * Door Window Lock Restrictor Set