Carbon Express Maxima Red 6mm OD Green Shafts 300 1 doz.Carbon Express Maxima Red 6mm OD Green Shafts 300 1 doz. Engineered to manage Dynamic Spine for improved accuracy; Stiffer ends contain flex to the RED ZONE for better broadhead performance; RED ZONE designed to reduce arrow flex, ensuring tighter groups; High tech carbon design for superior durability and performance; Ideal for hunters seeking consistent and reliable mid weight arrows; Improved hunting performance with tighter broadhead groupings;