This bracket lowers the keyboard tray 48 mm (1.8 inches) so you have more clearance for the keyboard and mouse. I really liked the tray but my desk setup meant that I needed more space between the bottom of the desk and the tray. I printed this using PLA and it seems to be sturdy enough.
Additional hardware required in addition to the keyboard tray:
4 M4x16 Hex Screws
4 M4 Hex Nuts
(Though any M4 screw will work as long as it is at least 16 MM)
NOTE: the image of the bracket was a version with several holes for adjustment purposes. They were removed in this version because they did not give enough clearance for the tray to fit against the new bracket. I removed the extra holes for this version, so there is only one height setting.
Here is the link for the keyboard tray on Amazon.
Model#Mount-KB05E
The author marked this model as their own original creation.