Tecnifibre Black Code 17 is a co-polyester tennis string designed for players who want strong spin potential, controlled power, and a more flexible response than traditional firm polyester strings. Its five-sided profile features defined edges that help grip the ball for added spin, while Thermocore technology improves flexibility and reduces the harshness commonly associated with polyester. The thinner 17-gauge construction enhances ball feel and responsiveness, making it appealing to aggressive players who prioritize spin and playability over maximum durability.
Intermediate to advanced players with fast, full swings who rely on topspin and want dependable control with a more forgiving polyester feel.
| Gauge | 17 / 1.24 mm |
| Construction | Co-polyester Monofilament |
| Profile | Five-Sided (Pentagonal) |
| Technology | Thermocore |
| Length | 12 m / 39.4 ft |