These wheels are Silent (or as quiet as any object gliding smoothly across wood can be)My chair shipped with nicer wheels than could have been supplied, but they were still loud.I live upstairs on a wood floor and I did not want to discomfort the downstairs neighbor.These also have the benefit of not damaging these original wood floors, one less worry for me and my security deposit.Easy install: tip chair over on to a couch or bed. Pull old casters out with minimal effort, push new wheels in, repeat 4 times and you are done.Informative: not a negative; be mindful your bottomed out height adjustment will increase by a few millimeters. Nothing huge, but if your ergonomics have you dialed in to interface with your desk at a specific height; hopefully you still have adjustment in your chair piston or the desk to compensate for the minuscule change.The chair is now effortless to move & smoothly glides around the room.You will discover if your floor is not level pretty quickly ?There has been this friction delay when trying to chair scoot more than 5 feet that I did not realize I have been anticipating. It’s gone ?‍♂️?The delay was caused by the previous high friction casters synchronizing orientation to travel in a new direction. These new wheels swivel so effortlessly that I am already accelerating when I am usually still exerting effort to get going.I want to take my chair to a wide open, smooth concrete conference center and just whoosh around for a while