Altra Centrum 204 Premier Shafts .001 350 1 doz. High-grade carbon shafts;Industry-leading straightness: .001 inches;NO SPINE Technology for improved tunability and consistency;State-of-the-art measuring equipment for straightness verification;Weight matched to +/- 1 grain;32" total length;A.R.C.O.S. Insert/Outsert System and nocks included;Premium components made from high-grade aluminum and stainless steel;Designed for unparalleled accuracy and efficiency;Ideal for achieving the pinnacle of precision and performance