CARBON EXPRESS MAXIMA RED CONTOUR SHAFTS 400 1 DOZ. Utilizing Carbon Express exclusive Tri-Spine Technology the RED ZONE is the center section of the arrow shaft, engineered specifically to contain Dynamic Spine and make broadheads shoot more consistently. By reducing the exaggerated effect of broadhead-tipped arrows, Carbon Express Maxima RED Contour arrows produce up to 4X the accuracy of traditional single spine arrows for improved performance at the range and in the field.