Easton Archery
Since there's some variation in the carbon from batch to batch, some shafts of the exact same spine might still be a few grains lighter or heavier than others. So, Easton goes to the trouble of exactly weight sorting the shafts, putting them in weight egories (C1, C2, etc) to ensure that not only do you have a perfect spine (which is the most important consideration) but the shaft weights ...