Material Silicone Classic Style Installation Type Screw-in About this item Durable material: the The hole cover on the desktop is made of white silicone, which is durable, corrosion-resistant, very durable and stable, and it can be applied many times Package includes: you will receive a total of 12 grommets of holes, each with an inner diameter of 25 mm/ 1 inch and an outer diameter of 29 mm/ 1.1 inch, please check if this is the size you need before purchasing Easy to install: you need to drill a suitable hole first, and the recommended diameter is 0.97 inch / 24.5 mm, then put the protective silicone cover in the hole, so that you can do a good job of cable management Suitable size: The silicone desktop grommet is about 1 inch, suitable for wires with a diameter of 1 inch or cables with a diameter of less than 1 inch, giving you a Neat Desktop Wide Range of Applications: With these desktop cable grommets, it's a convenient way to organize wires and cables efficiently; It can also be applied to computer desks, PC peripherals, office equipment, home, office and school entertainment systems