The V-Tec 23 target arrow shaft is a large diameter shaft with a .314 ID high modulus 100% carbon fiber construction for increased speed and accuracy with line cutting abilities. Every shaft is digitally spine aligned for increased accuracy for shot to shot consistency. With the advanced Nano Ceramic arrow coating also improves penetration and easy arrow removal. Straightness tolerance of +- .006â?쳌 and weight tolerance of +- 0.5 grains. Available in sizes 270 (7.2 GPI), 380 (6.8 GPI), 480 (7.2 GPI). F nocks and nock unibushing included. Inserts and target point sold separately.