Get your electric screwdriver out for this one, if you have one. There was a bit more assembly I expected, in terms of needing to screw in 4 screws for each wheel and each foot. I only started using my electric screwdriver about half way through and still ended up with blister from hand screwing the first half! Once assembled, this actually is quite sturdy even though the base is plastic and the adjustable rails are just thin metal. While I hated assembling this, it is more versatile than a traditional fixed sized dolly (that would require no assembly). Each wheel has a brake so you could ensure your item stays where it needs to. Rolls well on flat surfaces and soso on carpet. While I didn't have an immediate need for the adjustable feet, they might come in handy one day.