[High Quality Material]:These cable grommets are made of high quality and durable zinc alloy with excellent manufacturing technology, smooth and shiny surface, easy to clean, waterproof, pressure,pressure and corrosion resistance. Flexible size: the cable guide table can be guided through any cable whose diameter does not exceed 1.5 inches (1.5 inches). The plastic cover is removable. If there are many cables, you can use a table without plastic cover to seal. [Easy to install]: the inner diameter of the metal cable passage is 60 mm, the outer diameter is 68 mm and the height is 12 mm. You just need to drill a hole to insert the product and install it quickly and easily. [Practical and tidy]: With the guide desk, you can use multiple cables in any direction. This is an effective way to organise the table and keep the cables clean in the table and work area. [Widely used]: the cable hole cover can be used to pass daily phone lines, tablet computers, PC peripherals, office equipment, home, office and school entertainment systems.