The Arizona Rim E-Z Fletch for Bolts is the perfect tool for fast and easy vane and fletching instillation. This tool is for crossbow bolts and large diameter shafts. Radical helical drastically increases stabilization for optimal, group tightening accuracy, and faster broadband stabilization. This is the fastest, easiest, most accurate fletching tool. Go from your existing 4" to 2" vanes for greater accuracy.