What you receive: package comes with a desk cable wire grommet for wire management, and its material is ABS plastic; It is easy to install and apply, and you can use it with confidence with long time usage Practical design: featuring quality ABS plastic, desk grommet can stand the test of time without cracking or breaking, durable and reliable; The surface is frosted, which is very textured Removable lip: there is a small opening that can be manually adjusted by a spring, which can be applied to pass the wire through and keep the wire neat; Besides, the surface of the opening is designed with non-slip lines to increase the friction with the fingers; Thus, the lid is easy and convenient to open and use Wide application in daily life: desk grommet cord can organize computer desks neatly in various places, like schools, homes, computer rooms and so on, as well as various wires on the desks, creating a clean and tidy work and study area for you Features: Practical and removable design: You can gently open the cover to separate it from the bracket, which makes it easier to place more wires. The small opening is controlled by strong springs and screws. When not in use, the small opening can be tightly integrated with the lid without affecting the overall appearance of the desktop. Useful tool in life: PC computer desk plastic grommet is hard and tough, even its plastic material can be durable. It can not only make your desktop organized, but also fits for daily tidying and cleaning. Warm notes: Please allow a little error on the size due to manual measurement. Please read the size carefully before purchasing. The color might exist slight difference due to different displays. Material: ABS plastic Color: 1: Black, 2: White Size: 1: outer diameter about 60 mm, slot depth about 16 mm, opening size 50 mm, 2: outer diameter about 63 mm, slot depth about 20 mm, opening size 53 mm, 3: outer diameter about 72 mm, slot depth about 20 mm, opening size 60 mm, outer diameter about 94 mm, slot depth about 22 mm, opening size 80 mm Package includes: 1pc* wire hole cover