Killer Instinct Intense MX 340 spine Carbon Arrows - 6 Pack - The all-new Intense Series of arrows from Killer Instinct features the quality and performance bowhunters demand. The Intense series utilizes a unique 100% carbon construction that produces exceptional spine consistency. Each shaft is Laser sorted and matched for straightness. Precision sorted for straightness to +/- 0.003" for maximum consistency. 32.5" length fletched with 2" vanes, 0.244" Inner Diameter, 6 per pack, tunable nocks. LENGTH - 32.5" UNCUT STRAIGHTNESS TOLERANCE - .003" INNER DIAMETER - .244" 340 SPINE - 8.5