[Easy to operate]: This window lock can block the opening angle of window strips and balcony doors. It can control ventilation and adjust the window opening as needed. [ hook design]: The window limiter ensures enhanced stability and prevents easy removal, with a key function to prevent accidental window opening and potential falls. [Material]: The window wind hook is made of high-quality materials to durability, durability and service life. It prevents impact or opening of on windy days, improving comfort and . [Smooth ]: The window opening and closing protection device is treated with high-temperature varnish baking to create a smooth appearance, strong gloss and delicate touch. [Scope of application]: This window guard is suitable for various types of , including folding or rotating . It can lock the window at different opening angles to prevent accidental impact. Colour:Black Material:Carbon Steel Package Contents: 3 x Window stopper Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.