PSE Carbon Force Extreme Arrow Shafts. Grain weight matched to ¦1 grain p/dozen and straight to .003". Made from multi-directional high grade carbon, hand-wrapped and multi-layered for strength. This straight and fast flying arrow has a very flat trajectory for repeatable accuracy. Available in 4 different spine sizes to fit most any application. Shafts come with nocks and inserts. Black finish only.