This thing actually works really good. And it's pretty sturdy. I took it to Thailand in my check baggage, and it survived!

I bought this to work from home because my desk is too tall and I needed a lower surface for my keyboard and trackpad for ergonomics. I have chronic neck pain that causes tingling in my hands, so ergonomics are of utmost importance to me - I needed a surface that would be low enough for my elbows to be at their natural height, and I'm a very short person, so not every keyboard tray would do. Overall, this worked out really well for a quick solution, but I'm going to invest in a more stable one in the future.

Pros:
Won't budge from the desk - secure grip
Adjustable height - lowest setting is perfect for me
Curved edge allows wrists to float and not have pressure - there is a small lip about 1/8 inch and I thought this would bother me, but it's perfect for a palm rest
Short length - good size for a small person without a ten key pad.

Cons:
Tray is uneven - this is because of its general structure, attached to two moving parts, and not secured otherwise. This is why I have a paper towel under my keyboard because without it the keyboard wobbles.
Shifts back and forth when you push it in - you have to use both hands and even pressure, but not a huge deal, just annoying
Sticks out from my desk, but this is a personal issue because the lip on my desk is so short. It's not pushed in fully to the desk edges, so make sure you don't have a drawer like me.
Because it's secured at the one end when you push it in, the tray isn't level. If you have heavy technology, you might not like this factor.

Overall, it works great for someone who can't screw something into their desk, and it's fairly stable - worth the price. It won't fall off once you get it secured, and it is a little wobbly and not top of the line, but you get what you pay for. For the adjustable height and shorter length, this worked out great compared to other options, and I'm glad I got it.

I use it for keyboard.

I had a very sturdy table that provided excellent surface area and I decided to use it as a desk. Downside was that I was used to having a keyboard/mouse tray on my smaller desk. I chose this tray because the C-clamps would fit my 1.5" thick table and the large tray would hold my keyboard and mouse. After delivery, I had the tray unboxed and assembled in less than 20 minutes. Today was the first full day of working with the tray - a long 13 hour day - and I have ZERO shoulder pain or arm tingling! I am very happy with this purchase. The clamps are super sturdy, durable metal, and fit the table securely, even with my glass table topper (clamps are padded). The tray itself is plastic and could break with enough force but I do not intend to hit it with a hammer or use it as a diving board. I think this will be durable enough for my normal work day. I would purchase this again.

Easy to install, durable, and great price! Would buy again!