Work great for us so far
I wasn't sure how these would work out given some of the reviews for this product, but after almost a month of use I have no complaints. The problem we had was not only floor protection, but also noise as the office is directly above a bedroom in our house. I figured that even if they dragged instead of spun it would at least be quiet. They are quiet. But I also have not experienced the dragging phenomen though I can see how that could happen in theory. Perhaps our hardwood floors are not as shiny as others. Anyhow, I'm happy with the purchase and have yet to see any loss of felt from the wheels which was, actually, my primary worry prior to purchase.