Superstroke flatso 17the flatso 17 features ournon tapered technology new patent pending pentagonal shape andflat top design these characteristics inhibit wrist action andpromote shoulder rotation for consistency in your puttingstroke 170rdquo in diameter weighing 100gramsnew high tech pu material featurescrosstraction technology for improved feel and tackinessnon taper technology allows for evenpressure in both hands eliminating added tension in the wrist andforearms this