Roger Federer´s string choice, the durable and control-oriented response of Luxilon ALU and other Luxilon co-polyester strings has revolutionized professional tennis. The 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. ALU Rough is textured to further enhance spin production. This string is used by many ATP & WTA professional players.
Gauge: 16L / 1.25mm
Length: 40 feet / 12.2 meters)
Composition: Co-polymer (nylon) + Fluocarbon resin + aluminum fibers
Excellent durability for its gauge (12% more tenacity)
Good energy return