OK010 Ergonomic Laptop/Keyboard/Mouse Stand-Mount for Workstation/Video Gaming/etc (can be Installed to Your Chair Column or Any Round bar with max 1.96 inch Diagonal Thickness (Black)

I have bought 2 different systems for mounting the mouse surface to my arm rest. I wasn't really happy with either of them because it prevented me from moving the arm out of the way, and it really wasn't at the right height. i actually bought this to use the keyboard tray as my mouse tray. it works perfectly because now my arm resets don't have anything on them and I can move them in and out. The mouse has plenty of room to move on the tray, and I keep my keyboard on my lap. I have no idea what the directions said but for my purposes I didn't need them and everything worked out great. I have extra parts since I didn't use the actual device that was meant to be used as an arm rest/mouse holder. I will say if I was buying this for its intended purpose I don't like the way the actual mouse rest mounts. But since I am not using that at all I didn't care. If there was an option to buy the keyboard tray without the mouse tray it would be perfect.

Don't think of this as the product pictured. Think of it as a DIY kit for getting something like that... eventually.This is an ambitious product. I couldn't find anything on Amazon other than this (and another so similar it might actually be the same with different branding and packaging) that even tries to add a table / keyboard tray attached directly to an office chair. It doesn't quite live up to that ambition, and I definitely wouldn't attach it to my brand new Aeron chair, but for my old office chair that I wanted to make easier to use with my computer that has a 55" TV for a monitor, it seems like it'll work out.The instructions that came with this were extremely short and what was there was almost impossible to understand. (Maybe if they'd just shipped complete, intelligible instructions written in Chinese, we could have used Google Translate. It would have been nice to at least have more and larger pictures, and a clearer correspondence between the items pictured and the ones that actually came with it.) It came with 5 of each type of bolt and nut, when you only actually need 4. It also came with 3 kinds of bolts and nuts, but I can only see any actual use for 2 of them. Maybe they figured if they accidentally leave out a single bolt *and* an entire type of bolt, you'll still have enough parts. (I found the shorter ones more than adequate and less obtrusive for purposes of attaching the main bracket to the chair's air column.) Also, it came with a cheap pair of disposable (cloth!) gloves, for no obvious reason.As shipped, what I received was impossible to assemble into a working product. The tray is attached by a ball joint so you can correct for any angle anomalies, and the bolt that holds the bracket that holds the ball in place was too long, so it held the bracket too far away from the tray, meaning the ball was loose and it was impossible to get it tight enough for the tray to stay in one place. But I was able to fix that by repeatedly folding a piece of aluminum foil in half, punching a hole through it, and using that as a spacer (between the bracket and the tray) so the bolt would push tightly against the bracket.And it actually works! I have a tolerably stable tray attached to my chair that I can use a keyboard and trackball on and easily swing out of the way. I haven't attached the mouse tray yet (since I'm using a trackball) but it looks to be of much simpler design and comparable materials and worksmanship. Might be a little tricky since my armrests are curved, not flat, but that wasn't the interesting part of this for me anyway. It also came with some Velcro you can use to get your keyboard to stay in one place, but this isn't strictly necessary.If you order this, yours might have the same problems as mine, or different ones. You can probably resolve them and end up with a chair with an attached tray. Which is kind of cool, and seemingly almost impossible to find otherwise, even if you're willing to buy a new chair to get it.

I wish I could give half stars, otherwise I’d rate this 3 1/2. It really is the only product which I have seen like this.At first? I installed this as intended, and as many mentioned, curved arm rests do not work well with this. My chair not only came with a curve arm rest, but also upholstered. So the clamps that the mouse tray came with were wobbly at best. Anytime I left the mouse go the character instantly looked up at the ceiling, due, to a sliding mouse. Nit only that, but I couldn’t get it as far forward as I’d like, without worse conditions. It to mention the two clamps couldn’t slide much further and still reach the screw. So I did this modification and it is so much better! Albeit an eye sore.First? My armrest is hollow…save for some protruding studs for where the padded assembly attached, which I have ripped and sliced off beyond repair. I had to slice those studs down flush with the arm rest walls, using a hacksaw. Next, I dabbed JB Weld Marine glue (because of how well it works on plastic) on each of those studs, and along the edge walls. I then laid the 24” long plank of 2” wide wood down. After that cured, I found it still dipped in the front. I could have used a thicker piece of wood but I didn’t want the right side to be up nearly an inch higher significantly higher than my left arm rest. I the found that a chapstick container fit almost perfectly into over that final post and JB’d it on.Since I wanted to make this setup detachable, for potential future use on another chair, I settled on Velcro for the attachment of the mouse tray. This would also make fine tuned adjustment that much easier. After that? This setup is almost perfect. My only critique, other than proving attachments for curved armrests is to provide a swiveling function both the mouse tray and keyboard so you can fold them down to the sides of the chair, to get out of the chair more easily.

A bit pricey for the materials, but the design is actually impressive. Got it all set up and it feels pretty solid to me, none of the springiness others have mentioned. The trick is to clamp the mounting arm as high up on the chair tube as possible.The little palm rest is a good idea. My armrests tilt back with the chair, so I have to make sure I don't lose my mouse, but overall it's great.The keyboard tray is made of some sort of non- slip plastic and doesn't feel slick or cheap. My keyboard sits on it just fine, even at an angle.For now, I would recommend it and unless it breaks within a year or so, I will feel I got my money's worth.

I've bought some Chinese crap on this site but this has to be the worst POS I have seen yet. The worst set of directions I have ever seen. Not one label on anything. Wobbly garbage that should probably cost $30. Don't waste your time with this thing. You'll just have to return it.