The new Epic Flash Sub Zero fairway wood combines our groundbreaking new Flash Face Technology with precision shot-shaping technology for high swing speed players. We used Artificial Intelligence (A.I.) and Machine Learning to develop Flash Face technology for our new Epic Flash and Epic Flash Sub Zero drivers. And we applied what we learned to create an ultra-thin, forged Carpenter 455 steel clubface for Epic Flash fairway woods that incorporates our renowned Face Cup technology and our new Flash Face technology. The result is a uniquely designed clubface that’s expressly engineered for high COR across a large area, to promote fast ball speed on both center and off-center hits. Epic Flash Sub Zero fairway woods incorporate three additional proven performance-enhancing technologies, Jailbreak, adjustable sole weighting and a new, lighter OptiFit Hosel. Jailbreak technology stiffens and stabilizes the crown and sole, allowing the face to take on greater impact load, promoting faster ball speed. And the adjustable sole weighting consists of interchangeable 16- and 2-gram weights. Installing the heavy weight in the front location promotes lower spin and a flatter trajectory; installing the heavy weight in the back promotes easier launch and a higher trajectory.