Head's new AMP Technology features a revolutionary split beam frame construction that will amplify your power. Integrated into the throat area where power is lost during ball impact, it delivers 20% more stiffness than conventional designs. The AMP series frames also feature the DuraZone String Pattern which eliminates 33% of the grommet holes in the head of the racquet by using shared ports for increased durability and stiffness. Power Channels are lowered deeper into the throat of the frame increasing the length of each main string for more power.Vendor Sku 226009 Web DescriptionHead Amp 175 RB SportRacquetball Headsize106 Length22 Beam Width24 22 23mm Weight Strung185g6.5 oz ColorsRedBlackWhite CompositionConstructionMicrogel, Metallix String PatternMains X Crosses16 X 16 Recommended String Tension31 37lbs. Grommet TechnologyIGS2 Grommet Technology Frame TechnologyAMP Technology, DPC TechnologyGrip TypeHydrosorb Manuf. Recommended StringMegaBlast