Description: 【Material】: Crafted from aluminum alloy, this window lock is durablity, offering resistance to rust and wear. The protective rubber gasket ensures that your window handles remain scratchfree and undamaged 【Effortless Installation】: Designed for convenience, this window restrictor requires no additional tools for installation, saving you both time and effort 【Versatile Application】: Suitable for all types of outward-opening casement window, this lock can be installed in various settings such as homes, offices, schools, , and hotels to create a safe environment for children and other family members 【Compact Design】: With a length of 9.3cm or 13.3cm, the short version of this outward opening window lock is designed to be unobtrusive while providing maximum security 【Application】Window Hinges widely used in areas like residential buildings, hotels, and other commercial locations, ideal for both DIY enthusiasts and professionals Specification: Material: aluminum alloy Size Chart: 9.3cm/3.66inch 13.3cm/5.24inch Package Includes: 1x Window Lock   Note: Please allow slightly errors 1-2cm/0.39-0.79inch differences due to manual measurement.