Evnroll ZERO Putters represent a new era in putting performance thanks to two innovative advancements. First, FaceFoward Technology eliminates unwanted face rotation by aligning the shaft with the head's center of mass, keeping the putter square to the target throughout the stroke. Maintaining a square face at impact is critical to successful putting, as Evnroll's data shows that a mere one degree of variation can cause a ten-foot putt to miss, and a scant 0.5 degrees is enough to send a twenty-footer offline. The second is Evnroll's award-winning SweetFace Technology. Consisting of variable-width grooves that are wider in the center and gradually narrow toward the heel and toe, creating a precise V-shape, this patented and groundbreaking technology redirects the ball toward the target on mishits. The grooves' progressive spacing also transfers more energy when the ball is struck away from the sweet spot, ensuring all putts travel the same distance, regardless of where contact occurs. In other words, SweetFace drastically reduces the effects of player error, resulting in more makes and fewer three-putts. Featuring a hollowed-out center and four-point shape, the mallet-style Z1's perimeter-weighted construction yields extraordinary MOI, stability, and forgiveness. Evnroll ZERO Z1 Blue Putter Features: High MOI, incredibly stable full-size mallet 100% Milled from 6061 aircraft aluminum with 2 tungsten sole weights Incredibly solid yet soft feel Stock Grip: Evnroll TourTac Headcover Included Authorized Evnroll Retailer FaceForward Technology Putter face stays aligned with the target line throughout the entire stroke Effectively eliminates unwanted face rotation and ensures a square face Provides a "traditional" vertical shaft position that eliminates the need for severe shaft lean Shaft is aligned with the putter head's center of mass Enables the putter face to maintain its intended direction throughout the stroke Putter face positioned ahead of the shaft Allows the pu