Product Features Crafted from high-grade carbon for superior accuracy and efficiency. Industry-leading straightness of .001 verified by advanced measurement technology. NO SPINE Technology provides unmatched tunability and consistency. Proprietary high modulus carbon construction for exceptional durability. Premium aluminum and stainless steel components ensure high-quality performance. Product Specifications Pack Options: 6 fletched shafts Weight Match: Each package is weight-matched to +/- 1 grain. Length: 32 total. Components Included: A.R.C.O.S. Insert/Outsert System and nocks. 400 Spine GPI: 8.5