Shot Koi Carbon Dart Shafts - Inbetween BlackShot Koi Carbon dart shafts are high performance shafts from Shot Darts. Crafted in carbon composite, the Koi is designed and meticulously made to be featherlight, tough and durable. An aerodynamic tapered waisted design reduces air disturbance and allows for a better flight path. Its premium spring ring grips the flight tighter to the shaft, meaning less chance of Robin Hoods and a greater chance of victory.