More useful than I thought they would be. These have turned out to be easy rolling and good for many repair tasks in the boatyard. Two things: -had to add Loctite to all of the bolts as everything loosed up on us. Could not put super torque on the nuts for fear of collapsing the tubes of the frames. -the wheels are picking up a lot of debris from the shop floor and need to be scraped. Hopefully they will soon stop that.