Ergotron WorkFit-A Dual Workstation Arm. Supports 2 monitors and has keyboard shelf, no aux worksurface. Allows easy switching from sitting to standing during your workday, and is stable for typing when in the raised position. Monitor tray is a little warped from use but still functional. I'll even throw in the extra long monitor power and signal cables I used with it. This is a nice heavy unit and worked well for me for years but I changed jobs and I have a different desk arrangement now.
Link to manufacturer site below:
https://www.ergotron.com/en-us/products/product-details/24-316#?color=polished%20aluminum
Cash only. Call or text Mark. No calls after 9:00 PM, please.
If the ad is still posted, it is still for sale.