Based off of the original KURO KAGE Silver with TiNi, this XT Series utilizes premium 40 and 46 Ton Carbon Fiber as well as a longer application of the TiNi Wire Prepreg in the tip section. This combination delivers a shaft with firmer butt-section and tip-section, with lower torque than the original – our most extreme KURO KAGE profile yet. TiNi Wire - The TiNi wire in the KURO KAGE™ is an elastic yet extremely strong wire, TiNi has the unique ability to stretch and then immediately regain its original shape. This "stretching action" allows the shaft to efficiently transfer and unload energy. It also creates extra strength and stability to reduce shaft 40 and 46 Ton Carbon Fiber - Utilizing prepreg with higher modulus fibers in the tip section of this series further enhances this already "tip-stiff" profile adding stability and strength to the shaft without adding weight.