Well, I just saw a few cocker bolts available from ANS, they have a stainless steel back, with stainless push-pin, and changeble faces? One is the 8-Hole Venturi, and one is an open face. Why would you need two bolt faces? I know its handy, but how? Is there any time when someone has said while palying on the field. "Man, I really need that Venturi face right now" ? I havent heard it, so whats up with that? Cheers.