Lvwa B B ALU Power 125 200m Tennis Racket String 1.25mm Combines great durability with impressive power and good control. Used by several Tour professionals and coach, including lina and peng. The durable and control oriented response of LVWA ALU Power and other LVWA co-polyester strings has revolutionized professional tennis. By far the most popular choice on the match, LVWA's co-polyester monofilament construction allows a player to take full cuts at the ball without any loss of control. Players with fast swing speeds also tend to find these strings very spin friendly Gauge: 16L / 1.25mm Length: 660 feet / 220m Composition: Co-polymer nylon + Fluocarbon resin + aluminum fibers Color: Grey