I've had this new shredder a little over 6 months. It's a very good shredder generally, I had no problems installing the casters, as another reviewer said, they snap in. I've moved this shredder between 50 - 100 *feet* in its short life, on solid, flat, hardwood floors that are smooth as glass. BUT, the "housing" around 2 of the casters, separately from each other, have broken for no reason, and the housing around a 3rd has a smaller crack. See the 2 photos. I tried multiple layers of duct tape, but because the breaks are right at big and at two insertion points, it doesn't work. This is a huge annoyance to deal with. Other than these problems, the shredder is fine. I'd give this 4 if there were no caster problems. It gets 1 star because this is really a pain in the butt.