IRON BRIDGESTONE 23B 233HF NS PRO 850GH NEO #5-PW? Medium airport function iron (#6 9, PW) that aims at high initial velocity and high trajectory. Forgolfers who want a cool flight iron. Following thesimple design of tour irons, it has a soft feel and further flight functions. An iron with improved performance.? Dual Core Insert? The lower part near the hitting point is filled with polymer to pursue a soft feel. Theupper part is filled with foamed polymer with a specific gravity of 1 3 to reduce