Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Cheap.

I used this thing forever, and it always fell off. I don't think that's the fault of the product so much, but it only has 4 mounting points and that didn't seem to be enough for average use.It's Also very flimsy and it wobbles like crazy. The mouse tray is a joke, it will not support your wrist's weight.Screwing the thing on was also a nightmare, the L brackets were used to mount the slides to the table, and you couldn't screw the slides all the way in because the screws would block the tray from sliding in, but having them so far out made screwing the unit to the table such an annoyance, and I had to do it a lot since it always fell off.I think the fact that I could stretch the slides out to find new mounting holes is just further evidence how flimsy this thing is.I would not suggest it.