Review on Compact Desktop Power Grommet Hub with 2 Power Sockets & Dual USB Ports - Perfect for Office Desks and Recessed Power Outlets, Durable Plastic Top (White) - Includes 6 FT Power Cord by Jack Herrera

They work very well and the kids love them for their new desks. No complaints. The threaded plastic nut keeps things firmly in place. You need a fairly large hole. So if you don't have a 3 18" hole saw, this (DEWALT D180050 3 1/8" Hole Saw) and this shank (DEWALT DW1803 Heavy Duty 7/16" Quick Change Arbor shank (fits 1-1/4" " to 6" hole saws) works great To power the kids desk from the wall I use a simple flat cover power strip - Length: 5ft - Color: Black Now they don't have cords running all over the place and the Rumba doesn't trip over this.Total time for installation was about 15 minutes if that involved finding the centers of the table and a good depth of cut.Shape the spine,cut out and thread.So if you're looking for a good power case that will do the job yourself Even the least experienced handyman is easy, this is the one for you.