It's the first time to see this kind of three-hole screw. What tools should I use to remove it? Help online.

The reason why manufacturers use this three-hole screw is to prevent users from blindly disassembling it. Damage. Equipment or personnel caused by replacing inappropriate accessories. And property damage. Therefore, it is best to consult the manufacturer when encountering this kind of three-hole screw. If you can buy original parts, buy original parts, and don't disassemble them blindly. If not. If the manufacturer has no specific requirements, the self-made method can be adopted, because after all, the result is relatively simple to adopt. Hard steel wire is used to make three cylindrical vertebral sweat, just pile them together. Because this tool is usually used only once or twice, it won't last long, so if you spend a lot of money, you might as well buy an original accessory. So ... suggestion. Consult the manufacturer or make a simple tool yourself.