Interesting concept. Sort of like the turbo nocks I have seen floating around. I am working on getting some turbo knocks and it would be nice to test the "side by side". to see what really works. I have some really big broadheads laying around. I think Len said it best when he said it looks like a razoring on the other end. I am not an arro space eningeer, Not sure I even spellen it right, but I do like to test stuff out and seperate the fact from fiction. If your intrested drop me a line at [email protected]