Humanscale 100 Combo ergo keyboard tray w/6G mechanism & 8.5" dia mouse platform

Description

Humanscale 100 Combo custom black ergo keyboard tray w/6G dial-a-tilt mechanism and 8.5" diameter high-low, ambidextrous clip mouse platform.
The keyboard platform is 21-1/2" wide x 13-1/4" at its deepest point. The tray is made of 1/4" phenolic composite that is ultra-strong, non-toxic, durable and easy to clean. It has a versatile, 2-way design: with its curved edge, it accomodates ergonomic shaped keyboards; or, by rotating and reinstalling the platform, it accomodates straight-edge regular rectangular keyboards.
For ergonomic keyboarding, the keyboard platform can be adjusted up or down to the proper height for hands and wrists. Using the 6G mechanism dial that does not have to be locked/unlocked, the platform can be positive or negative-tilted depending upon preference, also to relieve wrist and hand strain. The keyboard tray can be brought as close as necessary, pushed away and then completely stowed under the desktop.
The 8.5" diameter clip mouse platform is high-low, tilt, depth and position adjustable. It can be installed either on the right or left side of the keyboard platform.
The tray attaches via a standard-length track 21-5/8" long (it fits under the standard 30" deep desk) x 5-3/8" wide. The track mounts to the underside of your desk, to support the tray and mechanism as they are positioned. When properly installed on a sufficiently deep desk, the track length ensures that the keyboard tray can be completely stowed under your desk when not in use.
For more information, go to
https://www.thehumansolution.com/humanscale-100-combo-keyboard-tray.html
In excellent, hardly used condition. But please note: The underside of the track is slightly scratched due to removing the installation tape that held it to my desk, but this will not be noticed once reinstalled. For ease of installation, a new piece of Scotch double-sided mounting tape has been applied.
All hardware and instructions included.
Also please see the photos, which are part of the description.
Based on cost, please select shipping: UPS ground or USPS retail ground.