The Victory Archery VAP TKO Elite Arrow Shafts are built for maximum kinetic energy and penetration. MaxxKe technology reduces the twisting force imparted on the arrow during launch to increase kinetic energy and accuracy. Offers a heavier grain weight than the standard VAP arrow shaft. Straightness tolerance of +-.001" . Available in sizes 300 (9.5 GPI), 350 (8.8 GPI), and 400 (8.1 GPI). Includes F nocks and SHOK inserts. FeaturesBuilt for maximum kinetic energy and penetrationMaxxKe technologyHeavier grain weight than the standard VAP arrow shaft