The Victory Archery RIP TKO Elite Low Torque Arrow Shafts is smaller than standard hunting arrows which reduces wind drift and increases penetration while maintaining extreme durability. MaxxKe Technology also increases kinetic energy during impact, helps the arrow to recover quicker in flight, and ensures your arrow hits hard every time. 300 (8.8 GPI), 350 (8.8 GPI). FeaturesLength: 31"Size: 300Carbon black construction8.8 GPI12 Pack