Made of premium aluminum alloy, wear- resistant, high hardness, to ensure long- term use..Suitable size: Approx. 7. 50X6. 40X2. 50cm/ 2. 95X2. 52X0. 98inch..Heavy duty reinforced door locks provide extra security for your home, apartment, hotel and so on..The door anti- theft lock has a simple design but good performance, and is easy to install and remove, which greatly saves your time and effort and brings you more convenience..Its thoughtful design makes the latch easy to use and provides extra security and reassurance to your home.