There are bumps from transportation.
Have not put it to use yet, just arrived. Looks to be built pretty well. The end plates and the base the bearing blocks are mounted on look to be cast aluminum, the base that the guideways are mounted to looks to be extruded aluminum. In the USA, someone is selling a similar unit for $100 more, but it appears to be made of all billet aluminum. This unit comes with 4 bearing blocks, which is necessary for my CNC router project.