Review on AGOOBO Grommet Office Brushed Silver by Ben Demers

They are a little under 2 inches and probably as much as 50mm long. You may need to tape the insert to get a precise 2" or a slightly large 2" hole. The tape made it almost impossible for me to get out of the table (which I wanted) BUT! They are perfect for the aircraft grade aluminum satin finish which is what you are looking for (and I have been looking for). High-quality all-metal design with silicone insert for cable routing. Works perfectly.