the only thing i would like to add to this...is if you still hunting i found them not to stay together to well...with my arrow (the one that is nocked) as i still hunt if it would hit a bush or brush up against something the blades would come unlocked and pop open.....after about two weekends of this the rubber o ring was torn up and i had to rotate it to get the blades to lock into place.......i think they are great broadheads and fly well even out to 65 yards....but for still hunters not the best head if you hunt with an arrow nocked...