The Spin-Tite Turbine Tip is the first spin-stabilized field point. Today's ultra sonic fighter jets utilize axial flow turbines to propel them through the upper stratoshpere 3 times faster than the speed of sound. That same technology is used in the all new Spin Tite Turbine Tip. This patented technology, called Spin Tite Airfoil Technology actually spin stabilizes arrows from the front. Finally high powered rifle accuracy in a target tip! Easy to pull and unaffected by crosswinds. Spin-Tite Turbine Tip 12-Pack.