I shot two deer with the original 3 blade Wasps. On one, a blade broke off in the hide, one was just gone,(rib) and about a third of the remaining blade stayed intact and went through the bucks heart. Kind of a way too long of a shot, but it was on. On the second, twoblades broke off on rib contact, I saw the arrow whip on contact. One full blade remained to go through the lungs. Hills, Hunter's Heads and for a couple of years Magnus 160s and Deltas. I get the Hills both single bevel and double bevel sharper than the original Wasps were after of couple of weeks of air and humidity. You cannot run your finger on the Hills without bleeding, I could on the old Wasps.