Independent testing shows that while some spin is necessary for accurate flight, too much can cause your arrow to lose speed very rapidly. What is required is a guidance system that will take over and steer the arrow regardless of what the broadhead is doing. The Blazer™, with its unique design begins steering and correcting immediately. The combination of the steep leading edge angle, and material stiffness, enables the air to flow over the vane in a manner that actually creates lift and leaves the tip of each vane inside undisturbed air. This is similar to the drafting principle used in auto racing. This airflow created by the precise leading edge angle allows the tip of each vane to act like a rudder, which is very noticeable at longer distances with the flatter trajectory Blazer™ vanes provide. Just give the Blazer™ a try and you will believe! Weighs 6 grains, .6 inches high.