BL=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. These new fibers are woven longitudinally with [K}arophite Black to create one of the most advanced composites in the industry.
Amplifeel handle technology provides an even cleaner and enhanced feel int he 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.
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