PING G425 SFT Driver The draw-biased SFT model (Straight-Flight Technology) is engineered to bring shots back on-line and into the fairway. A fixed 23-gram tungsten weight shifts the CG closer to the heel to accentuate right-to-left shot bend (RH golfers) compared to the G425 Max. The proprietary T9S+ forged face increases flexing and helps add distance. Draw Bias A fixed 23-gram tungsten back weight shifts the CG closer to the heel to promote a right-to-left shot bend of approximately 25 yards compared to G425 MAX. A lighter swingweight (D1) also helps correct ball flight. Precision Forged Face A proprietary high-strength, precision-machined T9S+ forged face maximizes flexing to deliver fast ball speeds and more distance. Internal Dragonfly With Dragonfly technology, weight savings from the Ti 8-1-1 ultra-thin crown are redistributed within the head and back weight to increase MOI and optimize the CG for more distance and forgiveness. Fast Design Refined crown turbulators reduce aerodynamic drag for increased swing speed and ball velocity. Internal Ribbing PING engineers developed an internal rib structure in the Ti 8-1-1 body, reinforcing key sections of the head to improve acoustics for a solid, pleasing sound and better feel. Easy Adjustability Trajectory Tuning 2.0 utilizes a lightweight, aerodynamic hosel sleeve that provides eight positions to customize your trajectory for maximum distance and accuracy.