I agree with Rob and Tony.

Do Not reuse the head unless you replace the blades!! [:@]

Blades are cheap. They might still feel scary sharp but trust me, after being shot into the ground THEY AREN'T!

It can easily be the difference between a good, short bloodtrail and a long sparse trail with no recovery.

I don't even use the blades if they've been in and out of the quiver foam more than15 times. It might be overkill but it's rare that the critters I shoot even travel out of sight.