Tecnifibre Black Code is a 100% co-polyester monofilament string on a 200m reel, built for players chasing spin with comfort. Its pentagonal profile bites into the ball for aggressive topspin and control, while Thermocore Technology softens the string for a more arm-friendly feel and strong tension maintenance. This 1.28mm/16-gauge version balances spin, feel and durability. • Gauge: 16 / 1.28mm • Length: 200m reel • Composition: co-polyester monofilament, pentagonal profile • Thermocore Technology for softer feel and tension retention