Product information: The window lock lever is made of steel, with a zinc alloy knob, making it durable, long-lasting, and not easy to rust. The window locks can be installed on windows that open to the left or right. Product advantages: The anti-tilt window angle is a practical part of your home equipment, with which you can properly ventilate your apartment and control and adjust the opening of the windows according to your needs. Our window blockers prevent windows from being easily and effectively opened or closed by air currents or wind. COMFORT: Perfectly protects the window from shocks or opening in windy weather, which increases comfort when using the window. For pivot, tilt, and pivot windows, also for balconies and patio doors. Can be used as cat protection. Instructions for use: After installation with screws, use is simple, just turn the knob to adjust the window's opening position. Keep doors and windows closed. Packaging: 1 * Stop Material: Carbon steel Finish: Polished chrome Note: Due to the different images shown, the actual color should apply. Dimensions are measured by hand, there may be errors (1-2 cm).