We’ve created the ultimate iron: a tremendous redistribution of weight, reducing club head twisting, transferring more energy to the ball at impact. We use exclusive True Tone® ultra-lightweight frequency controlled shafts by True Temper. The only shafts with True Tone® dual kick technology for precision loading and unloading. Available in all flex categories, multiple flexes available in each flex category. Also available with CBI high-performance graphite. The feel, performance, and distance bring the CBI Irons to a level no iron has ever known before.