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Designed for maximum distance and control, they are the most innovative, highest performing drivers Srixon has ever made. These drivers feature three key innovations working together to maximise performance: New Power Wave Sole: An advanced multi-step design which allows the entire sole to flex, helping increase distance across the face. New Stretch Flex Cup Face: The face has been extended further around the crown and sole to create a larger sweet spot. New Lightweight Crown: About 4 grams has been removed from the crown and were repositioned to enhance clubhead MOI and lower the centre of gravity.