Description Extreme weighting technology (EWT) combined with maximum cone-shape technology (MCT) maximizes the center of gravity (COG), producing consistently greater distance and accuracy. Extreme back weighting (EBW) with copper weight insert increases moment of inertia (MOI), promoting more stability for exceptional forgiveness and workability. Slotline perimeter weighting gives you a bigger sweet spot for a straighter shot on off center hits. Progressive face thickness technology (PFT) provides maximum coefficient of restitution (COR) for barely legal distance.