Headsize 107 Liquidmetal technology for pure energy and perfect power. Perfect maneuverability. Total Sweetspot Construction and oversize head combine for increased stability and a total sweetspot. Length 27 CompositionConstruction Liquid Metal TitaniumGraphite and Piezzo Electric Fibers String PatternMains X Crosses 18 x 20 Recommended String Tension 54 64 lbs. Beam Width 21mm Straight Beam Balance 4 pts. Head Light Power Level Low StiffnessFlex 60 Swing Weight 330 Swing Speed Fast Weight Strung 320g 11.3oz.