These are the wife and my first mechanical broad heads. I got the 100gr 2" swhackers The quality is amazing. They feel tough and very well built. I weighed all three and the practice broad head it came with and 3 out of the four were 100.00gr and one was 100.02gr! Now that is quality control! I shot the practice broad head and it flew just like my field points tested to 40 yards. I'll be testing at 100 this weekend. The wife got the low poundage 100gr 1.5" swhackers The quality control is just as good. She will be testing the flight tomorrow. All and all we are very happy. I will update on our first harvest in a couple months!