Maximize your control over the ball with the HEAD LYNX 17 1.25mm12m tennis racket string in Anthracite. Designed for touch and control, this monofilament string employs a new copolymer mixture that's perfect for aggressive play. It is extremely durable and suited for club and tournament levels. Gauge: 17 (1.25mm), Length: 40ft (12m), Composition: Copolyester monofilament. This string features a new and innovative Co-Polyester mix designed for lively touch and perfect control, with added durability for an aggressive style of player.