Yonex Poly Tour Strike 17/1.20 Tennis String (Black) Lynx Adjustable ring sitting on the

Adjustable ring sitting on the the players athlete's head

This string features two outer wraps applied in opposite directions to improve durability

ZX wear layer with Zyex filaments

Lobster Ball Detection Switch

Luxilon ALU Power Rough is the string used by Novak Djokovic & Roger Federer

Yonex Poly Tour Strike 17/1.20 Tennis String (Black) Lynx Adjustable ring sitting on theYonex Poly Tour Strike is a co poly monofilament string designed for hard hitting players that strike the ball with tons of power. Ideally suited for players with long, fast swings to maximize its playability, which include immense control and spin, but still maintains a decent level of comfort. Poly Tour Strike is the string used by Denis Shapovalov & Naomi Osaka Yonex Poly Tour Strike 17 1. 20 Tennis String (Black) Specs: Gauge: 17 Diameter: 1. 20