I have given 4 stars for this frame as there were no instructions in the enclosed booklet on how to replace ferrules on front legs with wheels.As a disabled Pensioner with arthritis it was hard enough to remove the ferrules on all legs but took me quite awhile trying to figure out how to attach the wheels. However, thanks to my neighbors son who finally worked out the outer "tubes" had to be removed from the front legs in order to attach the "tube" the wheels were on!! Tubes are probably not the correct word but who knows what is! Strongly suggest proper instructions regarding attaching the wheels are included in future ! Very easy to adjust height though, so all in all very happy with my purchase..thank you!