I was at the local scheels store today to see if they might have the hoyt hawk bows in yet, just to check them out, no such luck. While there I decided to check the shuttles you guys talk about, these heads look smaller then 1 1/8, look like they good shoot through a steel door. I left the store with out buying them and the closer I got to the house the more I wished I would have bought them. I took my arrows out when I got home and looked at my wacems and they looked frail in comparison, I will be going back to buy them just hope they shoot through blind window screen decent.