Cobra Amp Driver E9 Face Technology with Dual Roll has an elliptical face featuring a new canted bulge with dual roll design providing more distance to shots hit above and below the centerline AMP Speed Tuning: Each loft optimizes the amount of Dual Roll, head weight, shaft weight, grip weight and length differently to deliver the best performance for a given club head speed. Adjustable Flight Technology: Three simple face-angle settings (Open, Neutral and Closed) optimize ball flight for increased distance and improved accuracy. Aldila RIP speed tuned shafts: Progressive weight and EI flex profiles customize performance for various swing speeds.