Package and Quantity: Pack of 6pcs 2 inch Plastic Desk Grommet Hole Cover, suitable for 2.5 inch hole. Material and Specification: Made of high quality zinc alloy, good comprehensive performance, Mounting Hole Diameter: 2 inch (50mm); Overall Diameter: 2.19 inch (55.5mm); Height: 0.55 inch (14mm) Removable cover, with an opening hole sleeve, which can open the hole and clip-on top cover, controls the opening size and fits tightly with the cable and wire passing through the hole. Installation is simple and convenient, cut the black rubber ring, then place the main part of the grommet directly into the hole and start to hide all the cables and wires. Effective cable and wire management, protect and hide cables and wires, keep the table clean and tidy, and are also a good decoration.