These plastic covers are very good quality produced in strong plastic by one of the largest furniture component companies in Europe. They are great for Computer desks, offices, Sales counters or workstations. They fit nicely in the surface to keep your cables neat and tidy. The cover plate can be revolved away which will allow several cables to go through. The added benefit of these is that you can also completely remove and re attach the cover plate, This means you can then fit the entire plug through the hole. 80mm Diameter Plastic Cable Hole Covers - Black Top Cover Removable To Let Mains Plug Through Set of 4 Pieces Produced in Heavy Duty Plastic