6 - Pk. Bohning Blazer Shrink Fletch easily install on shafts from 17/64" to 24/64" in diameter. Simply submerge your shaft in 180 degree F water... in seconds, you have a perfectly fletched arrows. Blazer vanes are 1.987" long, with a profile height of .568". State Color. Order yours today! 6-Pk. Bohning Blazer Shrink Fletch