"Purchased these wheels to make up 2 extra 'dollies' for moving medium weight furniture. Product was a good price but quality was not as good as I had hoped. The bearing that swivels the wheel is very loose, rough sounding and is not as smooth as it should be, which is the case with all the wheels that I purchased (8). This has the effect that when there is a load on the 'dolly' it does not change direction as easily as it should. Definately not as smooth as my old dolly wheels that I have been using for 10 years! Cannot comment on reliability but I expect trouble from the bearings before long."