Compact head, face shape, and leading edge architecture in the Sub Zero are preferred by better players who like to work the ball. Includes interchangeable weights (14g and 2g) in the sole to fine-tune launch angle and spin-rate. Flash Face SS20 + Forged C300 Maraging Steel for Optimized Performance: Our new A.I.-optimized Flash Face SS20 is forged from exotic materials, which are uniquely designed for each model and loft to maximize ball speed and performance. Jailbreak + Face Cup + T2C Carbon Crown for Fast Ball Speed and Forgiveness: We’ve combined our industry-leading technologies to deliver distance, forgiveness and performance from every club. Progressive Leading Edge for Enhanced Performance: A unique leading-edge geometry in every model for easy launch. Optimized Weighting for Maximized Distance and Accuracy: Includes interchangeable weights (14g and 2g) in the sole to fine-tune launch angle and spin-rate.