Cobra Men's Fly Z+ Driver, Regular, Graphite, Red, Left Hand Speed Channel Face: An engineered trench around the perimeter of the face thins the wall structure around the perimeter to increase Speed Multi-Material Construction: Titanium 6-4 Body & Carbon Fiber Crown and Sole pieces maximize discretionary weight to deliver Movable Weight for CG positioning FLIP ZONE WEIGHT - Adjustable CG Technology - FLIP 13grams of weight between 2 discrete settings (Front CG or Back CG) to choose from to maximize a golfer's Distance and Driving Performance MyFly8 Technology: 8 different Loft/Trajectory Settings SmartPad Technology delivers a square face at address regardless of loft setting