Available only in 3mm polycarbonate (metal is too fragile for this). Polycarbonate arrives clear and slightly rough from machining. Sanding and painting is recommended! Keep top and bottom surfaces clear to allow underglow from the PCB to diffuse to the top case.
There is a tab around the cable connector that will need to be cut off for the spacer to fit correctly. This is to maintain a stronger structure for shipping, sanding, and finishing.