Optimizes spin, maximizes accuracy & produces tighter arrow groups. Patented "Kicker" rotates arrows up to 300% faster than conventional plastic vanes & over 100% faster than feathers. Durable toughened plastic bonds in seconds. Designed for trouble-free & incredibly accurate shooting. Patented Micro-Grooves on one side of each vane channel air over vane for flatter trajectory compared to conventional vanes. Use any standard fletching machine to apply. Can be applied straight, offset right, or right helical fletch.