1. Thickening material, no longer rust and durable, excessive power and practical.2. Anti-strong wind, hard damaged but easy to install.3. Depending on the installation location, you might open the window about 120 ° .4. The use of security lock, the positive broaden in security, to forestall the baby to open the windows, domestic essential.New and high qualityMaterial: stainless SteelColor: As the images showSize:As the photographs showPackage Included:1PcNote:Due to handbook measurement, please enable an error of 1-3mm.As various computers demonstrate diverse colors, thanks for your understanding, the particular product colour could also be barely various from the image.