I used them for a few seasons and didn't like the results I was getting out of the compared to others on the market for the same price. They did penitrate well, pass throughed on every animal I harvested. But the blades and fairels didn't hold up to the standards they claimed. They claim that the design of them is suppose to create a larger wound, they don't, the entry and exist were the exact size of the broadhead. The blades don't hold up to even missed shots in the dirt, they chip easy. The fairels bend easy as well. I spent hundreds on broadheads just to toss in the garbage. I don't recommend them......