The Maxima Blue Streak high performance crossbolt is designed to be the most accurate crossbolt ever developed for today s high speed crossbows. Featuring Carbon Express patented Dual Spine Weight Forward technology and a new precision insert for long distance pin point broadhead accuracy. Diamond Weave carbon cross-weave material delivers unparalleled spine consistency for the shooter who demands the ultimate in shooting performance. BuffTuff exterior also makes the Blue Streak tough and durable. Constructed using Dual Spine Weight Forward technology. 2" Fusion vanes for greater broadhead accuracy. Straightness: +0.0025" Max.