Sol 2 DIY Kit. Comes with plates and all screws you need. Only other thing you need besides soldering tools:
        
          
        
    - Switches
 - USB-C Cable
 - USB-C to C interconnect cable
 - Stabs (optional)
 - Keycaps
 - Wrist rests (optional)
 - Rotary Encoder(s) & knob(s) (optional & coming soon)
 
See more about the Sol 2 at RGBKB.net