Black Eagle Talon Crested Arrows .001 400 6 pk. Spine: 400;Inner Diameter: .2445";Outer Diameter: .291";GPI (Grains Per Inch): 7.6;.001" Straightness or Straighter;+/- 1 Grain Weight Tolerance;32" Shaft Length;High-quality carbon fiber material;Yellow cresting for increased visibility;Pack of 6;Includes standard nock, inserts, and Rapt-X vanes