Zero Z.1 Mallet Putter Zero Z.1 Mallet Putter - Introducing the newest member of the Zero family, the Z.1. Borrowing its design from the innovative 2022 ZERO putter, the new Z.1 features the same four-point extreme weighting and powerful ball-sized "zero" alignment. The ".1" indicates the short-slant inline hosel shafting that allows the putter head to flow effortlessly down the target line.. By design, the ultra-light aluminum body has a hollowed-out, ball-sized zero in the center which moves m