They are! I know many don't have faith in mechs, but I have total faith in Grim Reapers. I've only been bowhunting for two years so far - nine shots and nine dead deer close to my tree. Sorry to everyone who hates mechs, but if you get your hands on one and check it out, there's not much way for this broadhead to actually fail you when assembled properly. Don't expect a huge entry wound, but the exit wound is astounding.