I like that the unit is light weight. I like how it traverses the steps and stairs of our house, with and without aload.• look carefully at what you are unpacking. The unit I received had a plastic bag bundle of 3 lock nuts, 3 washers, several plastic squares (hole fillers) and a tool for tightening the lock nuts.• In what I received, there was no instruction booklet or paper. There was a page that said SPECIFICATION, which listed the number contents in the attached plastic bag.• For my hands, I found to tool too small, and thin to enable applying much pressure when tightening the lock nuts.As you can see in one of the photos I dug out two adjustable crescent wrenchs. A good adjustable crescent wrench made short work of tightening the two nuts. Only one wrench was needed.• The unboxing was simple and easy. Once the unit was clear of the box and the parts spread out. It was easy to tell that each axl needed the washer placed first, followed by the lock nut. Each wheel assembly came with it's bushing already in place. I decided to tighten the lock nuts just to the point where there was minute play in the wheel, side to side. It barely moves, side to side. However, it's forward and backward rolling motion is not affected. It rolls as anticipated.• Several plastic squares (whole fillers) were pushed into place and the unit's assembly was completed.I hoe you find this review helpful!- Kat
G. McGee 
