GMK LaserGMK Laser Custom Keyboard Cable. A beautifully hand crafted custom cable designed to compliment GMK Laser keycaps. Our custom developed Cerakote formula and dyeing process gives a perfect 1: 1 colour match. No other cable maker has managed to colour match GMK Laser's vivid fluorescent red using Cerakote. The Cerakote is also UV reactive, just like the keycaps. Only available from Kool Keys. Type: USB2. 0. Type C keyboard connection. USB Type A PC