Installation method: First use a screwdriver to make a hole at the position to be installed, pass the screw head through the other side of the hole, then screw on the button, and finally use the screwdriver to tighten the screw. If the fabric is thicker, please use a screwdriver to drill holes in a spiral and thread them several times in a row. Press the bottom of the screw with your thumb when threading the screw, and press the two index fingers on both sides of the hole to make the screw go out quickly. installation.