The Callaway Epic Flash Sub Zero driver features a new Callaway technology called Flash Face for significant ball speed and longer distances. Flash Face�s unique, internal mapping consists of dozens of subtle ripples flowing from heel to toe that work together to elevate COR in the face�s center region. The result is a significant ball speed boost for noticeable distance when solid contact is made. The advanced head shape and internal weighting of the Sub Zero create a rare combination of high MOI and low spin, resulting in more forgiveness and longer distance. The sliding 12-gram weight gives golfers the power to easily promote draws, fades or a straighter flight.