4S 17G/1.25 String Black

Tecnifibre Black Code 4S 17G/1.25 is a co-polyester tennis string built for players who want control and spin in equal measure. Its square shape creates four spin-friendly edges that bite into the ball on every swing.

Our playtest team found that control was this string's most undeniable strength. Black Code 4S let us unload our most powerful strokes without fear of overhitting. We could take massive upward cuts at the ball, and combined with the string's four grippy edges, the result was a recipe for massive spin.

• Type: Co-polyester tennis string
• Gauge: 17G/1.25
• Shape: Square, with four spin-friendly edges
• Feel: Firm
• Color: Black

Another standout trait of this spin-friendly co-poly is its firm feel, which gives aggressive swingers a stable, controlled response. If you play with heavy topspin and want to swing freely, Tecnifibre Black Code 4S is worth a look.