I honestly don't know how they do any of it. You'd think they use the same standard and one machine. Hard to believe they check everyone. Really don't think they do. It's not like they're returnable. I some what tried with a maxima. Contacted them and told them I had a bad arrow that wouldn't group with the others, it was a flyer. They return my response with. I don't understand what you mean. Please call meat ... Too funny. An arrow company not knowing what that means. Never did. Not worth the time. They were nice about it.