The latest racquet used by Roger Federer, the Wilson Six One Tour BLX 90 picks up where the Wilson K Factor KSixOne Tour 90 left off. Wilson introduces the use of Basalt fiber (BLX) technology for improved feel and frame feedback, continuing to feature classic feel in the same tradition as the previous-generation Pro Staffs: nSixOne Tour 90, Hyper Pro Staff Tour 90 and Pro Staff Kevlar 85. 17mm flat beam and 90 square inch headsize provide the ultimate in feel and control for those players advanced enough to wield Federer’s racquet of choice. Specifications are nearly identical with the past generation K Six One Tour 90. BLX builds upon the very popular K Factor design, offering a refinement of Wilson frame technology that provides the ultimate in feel and performance.What is BLX?Basalt is a natural volcanic rock used in manufacturing and made into fine and ultra fine gold fibers. Basalt fibers are enviornmentally friendly and superior to other fibers in terms of thermal stability, sound insluation, vibration assistance and durability. Players will find the ultimate in frequency reduction while retaining the performance of carbon fiber in terms of lightness, responsiveness, stability and rigidity.Basalt added into