I have 6 cedar arrows with the Bear name printed on them . My question is did bear have a way to tell what spine or size the arrows are ? The arrows I have do not have any other markings other than blue cresting with silver accents . Is there maybe a color code for sizing ? I cant remember where I got them but they came with Bear razorheads attached ,Yellow/gold in color with a sharp point not the blunts I've seen before .I would like to shoot these from my 62 kodiak which is 45# this season .