Managing how an arrow flexes in flight (Dynamic Spine) is the key to arrow accuracy, and no one does a better job at this than Carbon Express. The Maxima RED is a breakthrough in controlling Dynamic Spine. The high-tech carbon design has stiffer ends. Tri-Spine/RED ZONE Technology - Patented 3-spine arrow shaft with less than 1/3 the oscillation vs single spine arrow and four times the accuracy. BuffTuff Plus - Patented outer layer construction on the front 1/3 or 100% high modulus carbon weave for excellent strength and spine consistency. BuffTuff - Patented outer layer construction on the middle 1/3 that provides the world's toughest and quietest carbon arrow finish and makes it easier to remove from targets. Diamond Weave - Patented outer layer construction on the back 1/3 that provides ultimate stiffness and unparalleled spine technology. BullDog Nock Collars - Exclusive feature made of aircraft grade aluminum designed to prevent rear impact damage. Laser Match Set - Pack sets are sorted and matched by spine and weight for best-in-class consistency. Spine sorting tolerance +/- .0025" and weight sorting tolerance +/- 1.0 grains. +/- .002 Real Straightness - Laser checked for straightness to remarkable 1/10000 of an inch. Launchpad Precision Nocks - Controlled arrow release and integrated shaft alignment for more consistent accuracy. Q2i Rapt-X 2" Vanes in 6 or 12 packs. Please Note: Color may vary.