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 39;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.,