This is a very common type of window handle in daily life. It was very common in China around the year 2000. Nowadays, there are many shortcomings in the design of this honest window handle. The most important reason is that it hurts your hands and can harm your fingers. So I want to make a handle with a relatively smooth surface to replace the original small handle. I used 3D printing to create two flat replacement handles. Their difference lies in the spacing between the hole positions, which is 60 millimeters and 51 millimeters, which may or may not be the size of most original handles. If you have such a need, you can also contact me to customize a small handle that suits your size, which is not difficult. To replace the original handle with this one, you first need to measure the distance between the screws of the original handle. Then you need to use a Phillips screwdriver to remove the original handle and install a new one, which is also very simple and not difficult. Perhaps I can create a short video to teach I strongly recommend using 3mf format for printing. If you download the stl model separately for printing, it is worth noting that you may need to increase the number of walls to increase the strength of the model. If you encounter any problems, you can contact me