Square section for maximum spin, 20% more power than Pro Red Code, same tension maintenance as Razor Code, 15 % more durable than Black Code.The Tecnifibre Black Code String is a flexible and pliable string that allows the ball to dwell on the strings for longer and create extra spin and control.
- String Type: Polyester monofilament
- Official string of the ATP World Tour
- Square section for maximum spin
- Thermocare technology for great flexibility