Tecnifibre ATP Razor Code is a firm, control-oriented co-polyester tennis string engineered in France with Thermocore technology and a High Modulus Polyester Compound. The 16 gauge (1.30mm) Blue version delivers the sweet spot between durability and playability — thick enough to resist breakage from heavy topspin rallies, yet responsive enough for precision on every stroke. Thermocore construction softens the internal matrix, reducing arm fatigue during long sessions. This 12m cut-from-reel set gives you the same fresh string professional stringers and academies use across Delhi, Mumbai, Bengaluru, Chennai, Pune, and Hyderabad. Ideal for advanced and strong intermediate players with fast, aggressive swing styles.