The Ai-ONE #7 CS (center shaft) Broomstick is an iconic shape and a modern classic with an angular design that makes it very easy to align. This version has a 450 gram head and is built at 48 with a split Broomstick grip. This configuration makes this center shafted putter extremely stable. This putter features our Ai-ONE insert with an aluminum backer and White Hot urethane striking surface and our new SL 200 Stroke Lab steel shaft.