First off, I have 3 different monitor arms from Mount-It!, and all 3 are of exceptional quality and craftsmanship. I was searching for a stand for my Native Instruments Maschine Studio (hereafter, "MS"), and I noticed this item (MI-7945) from Mount-It! brand. I purchased it hoping that I could put the MS on the larger stand, and also add a DJ laptop shelf I'd bought separately to hold my laptop. To my surprise, the MS fits almost perfectly on the larger tray. The width is so close to that there is less than a quarter inch on either side of the MS. There are a few inches of room in the depth of the tray. The DJ laptop stand fit perfectly on the smaller part of the cart. All told, I couldn't be happier with how well it fits my needs.As for the item itself, it's easy to assemble, but it's important to pay close attention to the instructions. There were a few times during assembly in which I hastily completed some steps only to find that there actually IS only one way that some things can go even though it seems there are more than one. For example, when attaching the main vertical pole to the base, it first has to be aligned very straight or the plastic, cosmetic collar will not seat correctly, and if you attach it a quarter turn off from where it should be, the height holes for the shelf poles will be a quarter turn off and your shelves will be perpendicular to the way they should be. Also, the mounting of the pole to one of the bases seemed straightforward until I realize the holes only line up correctly one way, and the other possible way would cause the small shelf to overlap the larger shelf. Had I taken my time and made fewer assumptions, the assembly would have been particularly easy. Because I rushed in my over-confidence, it took me about another 5 minutes more than it should have. I'm a fairly handy person and almost never have trouble with IKEA furniture and the like, and this was no exception. It comes with everything you need for installation. The parts are all sturdy and well-made with nice additional welds to strengthen joints.Mount-It! brand continues to impress me. I just can't believe how fortunate I am that this fits everything so perfectly.