Product description flatso mid 17usga approved flat front17 length1 40 width100 grams 5the flatso mid 17 features our parallel technology new patent pending pentagonal shape and flat top design these characteristics inhibit wrist action and promote shoulder rotation for added consistency in your putting stroke 1 40 in diameter weighing 100 grams new high tech pu material features cross traction technology for improved feel and tackiness non taper technology allows for even pre