The Carbon Right Helical Tool expertly adds a helical twist to your vanes or feathers. Designed to fit arrows up to 5/16” (.3125) in diameter, it works perfectly with any right-wing feather or vane up to 5” long. As Arizona E-Z Fletch's top choice, this tool delivers outstanding results, especially with the latest 2” vanes on the market. Elevate your fletching precision with this trusted, high-performance tool..