Available Optional ExtrasPlease add to cart with your keyboard- Accessories- Solid Aluminum Wrist Rest- Brass PVD Rotary Knob/Badge/LED Light Sign The GB units will make some improvements compared to the prototype:Add the alignment pins where the gasket silicone column is installed, so the internal will not move up or down after assembly.Changed the per-key flex cut plate to a regular flex cut to avoid the PCB may hits the bottom case and improving the typing sound.Include a Customized Masking Tape to mod the flex-cut PCB for a better typing s