CompositionConstruction High Modulus Graphite with Titanium and Tungsten Headsize 100 Length 27 Weight Strung 325g11.4 oz. String PatternMains X Crosses 16x18 Recommended String Tension 53 63lbs Beam Width 18 20 18 mm Straight Balance Even Power Level 800 Low Medium StiffnessFlex 61 Firm Grommet Technology O Port design, allows for greater string movement Frame Technology Triple threatO3 Grip Type DuraTac Swing Weight 327 Swing Speed Fast Swing Type Longer, Faster Strokes Endorsed by Guillermo Coria Misc O3 Technology Increases sweetspot size by 54%Racquet comes without Cover