The Blazer® Vane’s unique design incorporates auto racing drafting principles to begin steering and correcting immediately, creating lift and flatter trajectory. We recommend fletching the Blazer® vanes helically for perfect results. Bohning® has optimized the steerage capabilities and overall performance with tighter tolerances making the Blazer® the lightest, high performance broad head vane ever produced. The base of every vane is chemically treated for maximum adhesion (requiring no need to clean the base of the vane). They work great for cross bow bolts too!!