Description:Wilson Pro Staff Six.One 100 BLX Tennis Racquet (Model #WRT71041U) Based on Federer`s Pro Staff Six One 90, the Wilson Pro Staff Six One BLX 100 adds a unique racquet to the Wilson Pro Staff family. Available in a slightly lighter feel and a bigger sweetspot than the Pro Staff Six.One Tour 90 and Six.One 95. It is 10.6 ounces strung and has a thicker 22mm tapered beam. Has Wilson`s legendary braided graphite construction combined with new Amplifeel handle system for the best feel yet in a Wilson Pro Staff. The 100sq. inch headsize offers a comfortable feel with a healthy sweetspot. Ideally suited for players with aggressive, long strokes. Recommended for the 4.5+ NTRP level players. BLX Technology: stands for basalt, X stands for 9 extraordinary, proprietary technologies. BLX for the Perfect Feel. Basalt: Basalt is a natural volcanic rock. It can be used in manufacturing where it is made into fine gold fibers with incredible vibration resistance. Wilson`s new technology, BLX, has used these basalt fibers and woven them longitudinally with [K]arophite Black to create one of the most advanced composites in the industry. With basalt, a smoother signal reaches the hand. BLX technology delivers clean feedback and better sensation for the Perfect Feel. Amplifeel: Amplifeel is a handle technology which provides an even cleaner and enhanced feel in the racquet. Amplifeel also allows for a more customized handle system providing additional handle comfort to further support maximizing the feel in each racquet and player segment.