90 ° opening and closing, durable and beautiful. The flip design keeps the desk clean and tidy, and the messy desk is more tidy to accommodate more wires. One hole can be installed. Aluminum alloy panel, fastening steel frame inner wall, anti-aging safety and multiple protection, durable,. It is suitable for TV Cabinet,desk furniture and home improvement. Easy installation ,made of good quality material,durable for used. With a flip open cover, it allows wires and cable to pass through safely and neatly.