ProActive FOAM – To absorb vibration and strengthening the frame with solid and comfortable feel. AERO FORCE FRAME – Combination of solid hitting feel and quick swing. T-CURATE – Maximize frame and shaft stability. – Enhanced attacking power. – Increased accuracy of shuttle direction. SLIM SHAFT – Increase in swing speed – Effectively transfer of weight for greater smash performance 40T Japan Toray HM Graphite – High compressive strength with maximum tension up to 36 lbs. PRODUCT DETAILS Construction : 40T Japanese Toray HM Graphite + Nano Epotec Resin + Proactive Foam Frame : Aero Force Length : 675mm Shaft Flexibility : Extra Stiff Weight : 4U (83g+/-2g) Balance : 4U (297 +/-5mm) Grommet System : 76 holes Recommended Tension : 26 - 32 (+/-2 lbs) Shaft Diameter : 7.0mm Slim Shaft Technology Max Tension : 36 lbs Grip Size : G1 Recommended : Power, Defend & Control