Features: Make of plastic, this window lock clamp comes with screws and is designs to provide a secure latches for window. Suitable for various types of window and small door, it can be mounted on aluminum, wood, and metal profiles. Specifically designs for safe ventilation and accident prevention, this window lock clamp safeguards babies and children from falling out of window. It act as additional security device, restricting the opening size of door or window to prevent unauthorized access and protect your property from theft. The adjustable angles allow you to control window opening size, avoiding strong gusts of wind from entering while maintaining proper airflows. Specifications: Component: Plastic Length: 7.3cm/2.87inch Adjustable width: 2.5-13cm/0.98-5.12inch Package Includes: 2pcs/set Adjustable limiters fixer note: Please allow 1-2cm errors due to manual measurement, make sure that you do not mind before you order. Due to difference between different monitors, the picture may not reflect the actual color.