Easton X10 Protour Shaft 12pk – provides winning scores for todays top compound archers. ProTour continues to set new records with exclusive front tapered engineering. Utilizes the highest modulus carbon fiber for a weight, spine and strength combination tailored to optimize compound bow performance. Since its introduction, the compound specific X10 Protour has won more titles and set more records for compound archers than all other choices. Lightweight, high-modulus carbon fiber bonded to a precision 7075 alloy core with polished black carbon finish. Straightness .0015in weight tolerance 0.5gr.Components sold separately.