All Metal Ball Bearing Keyboard Slide - 14, 3/4 Extension - Black

I've converted regular office bookshelves into standing desks twice now. Simply place a monitor on shelf so that it's at eye-height, and mount a sliding keyboard tray under a shelf that's a comfortable height, maybe drill a few 1" holes in the shelves to run cables if you need to, and you're done. When the tray is pushed fully back into the shelving it does protrude a few inches beyond the normal front of the shelving, but I don't think it's too unsightly.I used these keyboard rails for my second project. They worked as expected... the slide quality is good, and the installation process was easy enough. It comes with hardware screw the brackets to the fixed shelf, but I needed to add a few wood screws to attach the board I chose to use as the tray. As other reviewers have said, these rails can be mounted with the brackets facing out (easier installation) or facing inwards (slightly trickier to install, but gaining an inch or two of tray width). I chose the wider tray width, and even with a wireless keyboard and mouse there is plenty of space.

I type on my keyboard pretty much all day, every day. I recently added a new computer to the office and, in turn, needed another keyboard. I decided to splurge on a quality mechanical keyboard (which, in retrospect, I should have done years ago) and, subsequently, have been seeking the perfect positioning on my desk for comfortable, fast, and accurate typing. After much experimentation, I found that I preferred the keyboard to be very low - essentially right on my lap. Not wanting to keep a keyboard (especially a corded one) on my lap all day, though, I decided to use an under-desk keyboard tray.I've had several under-desk keyboard trays over the years, ranging from inexpensive and basic, to costly and (supposedly) high-end. I haven't been happy with any of them. Ironically, some of the fanciest and most expensive models performed the worst. I have pretty basic requirements; I want my keyboard tray to be:1. Adjustable to the exact height where I want it2. Rock solid, with no wobbling and without tearing hunks of material out of my desk because it's cantilevered out too far3. Large, both with respect to width and depth, ideally filling all of the space between the legs/cabinets under my desk (a scant 26" for my current desk)Never having found an off-the-shelf one that fit my needs, including in the past and during my most recent searching, I saved some heavy-duty drawer slides off of an old desk with the intent of making my own tray. I have a nice piece of sheet metal left over from another project that I was planning to fashion into braces for mounting the drawer slides under my desk. Given the thickness of the metal, though, it would have cost me hundreds or thousands of dollars to buy/make a metal brake strong enough to bend the steel. (I'd considered farming out the job to a metal shop, but figured I'd need to do enough adjusting along the way that that wouldn't be practical.) So, ultimately, I started looking for slides with appropriate pre-made brackets that could work as a keyboard tray.Surprisingly, I found these ones on Amazon right off-the-bat. Based on the good reviews, I bought a set - and am glad that I did. These slides meet all three of my criteria above:1. Adjustment: You can adjust the height in about 1 cm increments, which is pretty fine. I have mine hovering just above lap level - and withjust enough clearance to get the highest keys on the keyboard to clear the lip on the bottom-front edge of the desk. Just perfect. Also, considering that you supply your own board, you can make it as narrow or as wide as you want. I have 26" of space, and added a 24" piece of laminated shelving. That gives me a large tray, with just barely enough space to clear the desk legs/cabinet. Also, note that you can flip the mounting brackets to face outward (as shown in the product photo) or inward. I had to turn mine inward in order to squeeze them in to the available space, so I'm really glad that I had that option.2. Stability: These slides are solid. The metal is plenty thick enough for the weight that they're holding. They don't sway or twist, especially with the help of the grippy, quality screws that come with the kit. I spent a lot of time aligning the slides perfectly squarely so the tray slides straight, hitting the front and back stops at exactly the same time. The slides also have rubber locks that "click" into place when fully extended or retracted. The locks engage positively, and hold the tray absolutely stable when I'm using it. The fact that this tray is anchored at each side, rather than in the middle, as with some expensive trays, makes the whole assembly especially sturdy. It gives me pleasure to use such a well-built tool throughout the day.3. Size: These slides are built to accommodate a deep 14" platform. There's nothing to stop you from using an even deeper one, but most users probably won't need anything bigger than 14". For reference, you'll need a platform at least 6.5" deep in order to hit all four of the mounting holes for the tray, itself. The slides move 10", which is a long distance, and plenty for my needs. I mounted the slides pretty far back, both to clear a lip under the front edge of my desk, and to get the tray out of the way when I'm not using it. Still, I can slide it out into position with plenty of space to accommodate even a large keyboard and wrist rest. Width-wise, because you supply your own board, you can make your tray as wide as you like. I used a 12" x 24" x 5/8" piece of laminated MDF shelving (pre-finished, off-the-shelf from a home store) and it's very sturdy at this width. I'd also looked at using oak flooring and sheet metal. Choosing your own size/material tray is one of the advantages of buying these slides, as opposed to a complete keyboard tray.My only complaint is that these slides only come in one color. All of my office furniture is white, so these black slides stand out (in a bad way). I'd considered painting them, but they already have a high-quality enamel finish that's better than anything I could do, and I'd probably clog the races/bearings if I started spraying. I'd considered docking this product one star because of the lack of color choice, but they're too good otherwise to ding them for that one minor oversight.To summarize, I'm entirely satisfied with these keyboard tray slides, and recommend them without reservation.

These are very good slides, well made, strong, easy to mount. Adjustable to some degree. I highly recommend the slides.

I have an old computer desk that just won't quit...except for the keyboard tray sliding rails. Thanks to these, my desk is almost like new. Granted it is a little awkward to install but if you take your time and think it through it should go without a hitch. The build is of higher quality than the original ones and the sliding is smooth and has lock positions at both extremes (full retracted and fully pushed in). I would recommend this product.

Works as intended. Nothing much to say.It is a reliable purchase. Its worth its weight in gold.