Bohning True Fletch Vanes - 6 Pack - Blazer True Fletch offers a fast and easy way to fletch arrows. It fits arrows from 0.219 -0.375 (5.6 - 9.5mm). Slowly submerge in boiling water to apply. Blazer True Fletch Measures 5in (12.7cm) Weighs An Average Of 27 Grains