High Quality Material: Made of sturdy aluminum alloy, strong and durable, it is resistant to high temperature and corrosion. Anti-dust and anti-friction: Thickened base with brush in high quality nylon, which effectively prevents dust and reduces friction, it's wear resistance, and will protect the threads from damage and maintain a high degree of flexibility. Clamshell design : Unique square desk grommet with clamshell design, it can store messy cables well on the desk, provide a neat and tidy way to manage cables and wires on your desk. Simple Appearance: Smooth edges without burrs, simple and elegant appearance can perfectly match modern style office and homes. Desktop Wire Storage: Special wide-mouth design, organize wires computer desks and office equipment in a perfect way to keep your clean desk and avoid messy and tangled wires.