V-Series Technology Multi-Material Construction V2 - 100% milled 303 stainless steel with tungsten and steel heel-toe weights. V5.1 & V5.2 – 100% milled 303 stainless steel face, paired with lightweight 6061 aluminum rear body with tungsten and steel heel-toe weights. V12 - 100% milled 6061 aluminum body and face with stainless steel perimeter weights SweetFace™ Technology Series of variable-width channels that recover energy lost on putts hit away from center Eliminates dispersion by redirecting off center putts back to the target line. Delivers even energy transfer on shots hit across the entire hitting area for exceptional distance control Swing weight balanced 100% milled tungsten and steel sole weights for high MOI (Moment of Inertia) and increased stability Variable weights to maintain a tour preferred D5 swing weight for all shaft lengths