N.S. PRO MODUS 3 Tour 105 was first brought out to tour as the N.S. PRO MODUS 3 PROTO ST in 2 and was put in play immediately. The PROTO ST was in the winning bags of eight professionals since it’s launch and became the second most popular MODUS 3 irons shafts on tour, just behind the N.S. PRO MODUS 3 Tour 120.