https://www.ebay.com/sch/i.html?_nkw=Positive+Locking+Keyboard+Tray+Highly+Adjustable+Platform+17+3+4+Tr&_sacat=0&_dmd=2

Positive Locking Keyboard Tray, Highly Adjustable Platform, 17-3/4' Tr

Regular price
$226.00
Sale price
$155.00

Highly adjustable keyboard platform features lateral adjustment, 6" height range, 360 swivel and +10 /-15 tilt. Lever handle ensures positive lock on platform height; just flip lever to the right, adjust height and move lever back to lock in place. Separate pull lever for tilt adjustment. Independent articulating mouse platform can be mounted right or left. Leatherette gel wrist rests with antimicrobial product protection. Precise mousing surface extends battery life.