Desinged with plastic material, are sutable for more size computer cable. Ideal accessory for you to install the cable on the computer desk, is used widey in office, home, hotel, bank, etc. Product Name : Desk grommet Fit for : Computer Desk Material : Hard Plastic Color : Light Gray Mounting Hole Diameter : 53mm/2.1" Overall Size : 61mm x 15mm/2.4" x 0.6" (D*H) Open Hole Size : 32mm x 16mm/1.3" x 0.6" (L*W) Weight : 51g Package Contents : 4 x Desk Grommets Note: Light shooting and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.