Product information: The window adjustment bar is made of steel, zinc alloy rotary knob, durable, durable, sturdy and not easy to rust. The window lock can be used on windows that open left or right.Product advantages: The window tilt protection is a practical part of your home equipment, with which you can ventilate your apartment sufficiently and control and adjust the opening degree of the windows according to your needs. Our window stop prevents windows from opening or closing simply and effectively due to drafts or wind.Comfort: The perfect protection against slamming or opening windows in windy weather, which increases the comfort of using windows. For pivot, tilt and turn windows, also suitable for balcony and terrace doors. Can be used as a cat lock protection.Instructions for use: After installing with screws, easy to use, just turn the knob to adjust the position of the window opening. Functionality in storms is not guaranteed. Please keep doors and windows closed.Product Dimensions Window lock length 19 cm long, bar diameter: 6 mm, mounting sheet width: 50 mm / 40 mm, rotary knob diameter: 20 mm, maximum sliding distance: 14 cm, weight: 120 g. Windows cannot easily slam in windy conditions.