CNC Milled Face-The Power Zone-CNC milling is up to 5 times more precise than hand polishing, allowing us to repeatedly product a face that is right up to the legal limit. Hollow Split Rails-The Flex Zone-Hollow rails flex more the solid rails, creating a 70% larger hot spot area from heel to toe that promotes higher launch and more ball speed with the aid of a speed channel. Dual Baffler Rails-The Stability Zone-Baffler rails provide excellent stability and speed through the turf, allowing the club to glide effortlessly out of any lie. Carbon Fiber Crown-The Light Zone-Carbon fiber creates discretionary weight to move the center of gravity lower and deeper.