Review on Effortlessly Relocate Heavy Furniture with SPACEKEEPER Furniture Mover Dolly - 6-Inch Steel Tri-Dolly, 500 Lbs Capacity, 3 Wheels, 4 Pack by Wayne Girard

Great in theory. On a flat floor with a level surface, everything is fine. You can move your large piece of furniture, but not without fear that the wheel will slip out of a corner at the slightest bump in the floor. The center disc for flat furniture is hard and doesn't move, another reason why furniture slips off casters. There should be some kind of thick foam rubber to help the furniture stick to the casters. I can't recommend them for the price. I've been using them for a month now and a lot of the positive feedback comes from people who have only used them once or twice. They absolutely do not roll on rougher surfaces like an old driveway. I stopped using them all together because a piece of furniture I was painting fell completely and was damaged.