Tour Concept represents the pinnacle of golf shaft performance. This premium shaft incorporates design feedback from PGA Tour Professionals, product engineers and the most extensive robotic testing in the industry. Users benefit because the shafts are the only constant weight, discrete length and flighted shaft available in golf. The long irons (2-4) launch higher for optimum trajectory and distance, mid irons (5-7) feature a moderate trajectory for accuracy on approach and short irons (8-PW) have a lower trajectory for improved ball flight.