Hey, they call them "replacement blades" for a reason. Shoot them and toss them. I don't really toss them all, I keep some for practice and tuning. Once the "Hunting Arrow" is tuned it gets new inserts and isn't shot again until a deer is standing in front of it. If it hits the dirt it gets tested, retuned and new inserts. Thunderheads, Muzzy whatever.... they should all get new inserts for the hunt. I use the Thunderheads.