Description: Aluminum Alloy: This Sliding Window Lock is made of aluminum alloy material, which is not easily deformed, and can effectively prevent scratches or damage to the window. Effective Fixing: You can choose a suitable location to use Window Locks to fix the window to ensure air circulation, prevent pets from climbing out of the window, etc. Occasion: Child Security Lockers are suitable for fixed protection in hotels, courtyards, storage rooms, garages, homes, entertainment centers, etc. Easy to Use: The Security Security Door Locks are easy to install, you only need to choose a suitable location to put it in adjust the distance between the sliding window locks, and fix it. Wide Application: Our Metal Window Locks are suitable for vertical doors, sliding door tracks, sliding window, sliding patio doors, sliding glass doors, etc. Size Chart:2.4cmx5.5mmx3.3cm/0.94inchx0.22inchx1.30inch Package Includes: 12 Sliding Window Locks Note: Please allow slightly errors due to manual measurement and different monitors.