Wilson Hit Stick BLX Racquetball Racquet Maximum power with superior control BLX Basalt technology has basalt fibers woven logitudinally with [K]arophite Black filtering unwanted extreme vibrations and delivering a clean feedback with better sensation and perfect feel Power Strings design maintains consistent string placement for lethal power on every shot AGT, or Articulated Grommet Technology, allows for 76-degree string movement and the biggest sweet spot ever Control base is an innovative hoop engineering for maximum torsional stability and precise control