Quantity: 6 Pack Black Desktop Grommets for Wire Management; Material: Made of sturdy plastic, more durable Desktop Hole Grommet: Mounting Hole Diameter: 45mm; total dimensions: 51mm x 20mm (Diameter x Height) Removable Rim: Features a small open hole to pass wires through and keep wires tidier; the lid is removable, so if you have a lot of cords, you can use the desk grommet without a lid Desk storage grommet: allows you to run cords through the top of desks conveniently orderly, creating an organized look and keeping cords tidy in desks and work areas Application: The desk cord grommet can neatly organize wires from computer desks, PC peripherals , office equipment, home, office and school entertainment systems