Choosing the Right Arrow Stiffness
The spine rating of an arrow is simply a measurement of its stiffness. The same arrow comes in a variety of stiffness: the lower the number, the stiffer the arrow.
The Eaton Axis 5mm Arrows comes with 7 different spine options: - 200 - 260 - 300 - 340 - 400 - 600 Remmeber, the lower the number, the stiffer the arrow.