The file '4040 Profile Storage Tray For Rii X8 3D Printer Model' is (stl) file type, size is 100.4KB.
This is a storage tray I designed to mount the Rii x8 on my sim rig for easy access.It's not a tight fit, to get the keyboard in and out of the tray quickly.
Of course you can also use it to store any other stuff
