The Tecnifibre 4S 1.30mm (200m Reel) is engineered for heavy topspin baseliners seeking unmatched ball bite, trajectory control, and extended durability. Featuring a unique square (four-sided) geometric profile, 4S grips the ball fiercely at contact to generate maximum rotational energy and dipping groundstrokes that push opponents deep behind the baseline.

Manufactured with Tecnifibre's advanced Thermocore manufacturing process, 4S tempers rigid polyester molecules to deliver superior shock dampening, a softer feel on off-center hits, and excellent tension stability. The stout 1.30mm (16G) gauge provides maximum durability for aggressive string breakers.

Key Features:

• Square Geometric Profile: Four sharp edges provide maximum mechanical grip for aggressive topspin and slice.
• Thermocore Technology: Multi-stage heating process softens the polyester matrix to reduce arm strain and maintain tension.
• Surgical Trajectory Control: Low-powered response allows aggressive players to take full cuts with complete confidence.
• High-Durability 1.30mm Gauge: Resists notching and premature breakage against heavy topspin hitting.
• Bulk 200m Reel: Provides 16 to 18 complete racket string jobs for serious competitors.

Specifications:

• Composition: Co-polyester monofilament (Square profile, Thermocore treated)
• Gauge: 1.30 mm / 16 Gauge
• Length: 200 m / 660 ft
• Color: Black