The CIO is a premium Corne keyboard case made from brushed stainless steel plate and walnut. The switch plates are laser cut from 1.5mm steel plate and allow for Cherry MX style switches to snap into place. Each back plate is cut from 3.0mm stainless steel with countersunk screw holes. Matching hardware allows for clean lines and flush fitment. Each half weighs approximately 369 grams with 1.5mm switch plate and 415 grams with 3.0mm switch plate.
The 3.0mm switch plate option does not allow for switches to snap into place. The fit of the switches in the thicker plates is the same as acrylic and wood switch plates.