Designed for professionals and advanced amateurs, the new MODUSA^3 steel iron shaft series was developed in response to the specific requests of PGA Tour professionals. Nippon Shaft employed its renowned, world-class steel shaft technology to focus on three critical areas: achieving desired trajectory, delivering proper distance and assuring pin-point accuracy. The resulting N.S. PRO MODUSA^3 is remarkable for its unique bending profile. Even the most challenging professional courses can be attacked from setup to finish with confidence, thanks to the optimized trajectory, distance and direction. Features: Delivering proper distance and assuring pin-point accuracy This outstanding shaft enables true power shots with pin-point accuracy in all conditions