The Victory Armour Piercing line of arrow shafts is an ultra-small diameter, thick walled arrow designed for accuracy and increased penetration. Features high quality carbon composite construction and Victoryâ??s ICE coating for a smooth polished finished. Straightness tolerance of +- .001â?쳌 and weight tolerance of +- 0.5 grains. Available in sizes 250 (9.8 GPI) 300 (8.7 GPI), 350 (7.8 GPI), 400 (7.1 GPI), and 500 (6.0 GPI). Nocks and inserts included.