5. Safety protection: In addition to helping control the opening angle of the window, more importantly, it also has a good windproof function. In the home or office environment, it can prevent the windows from being opened or closed uncontrollably due to strong winds, and protect the safety of users.2. Retractable freely: It has excellent telescopic performance, is not limited by the size of the window, can effectively adjust the opening angle of the window, and provides a safe and convenient way of use3. Angle control: The built-in angle controller can help users adjust the opening angle of the window more accurately, whether it is fully open or half open, it can be easily achieved1. Quality assurance: Made of high-quality stainless steel, corrosion-resistant, wear-resistant, and can maintain good performance in various environments. Especially suitable for use in wet or salt spray environments4. Strong compatibility: It can seamlessly cooperate with various types of sliding windows, and is an ideal accessory choice for sliding windows. At the same time, the installation is convenient, and it can be easily installed without professional technicians