ACR, Echo DHII, Danielsson, Leland, Hardy, Rio, Airflo
Do Shanks require a special Jaw in the Vice???
I use OPST shanks with no additional tool. As long as at least 1/8" of the shank is in the jaws of my vice, it stays in there pretty well. Most of the time I secure a little more and cut off the end when the fly is finished, if needed. If I'm tying a long enough fly, sometimes I'll start pulling down the shank when I am working on the head. I just reposition as needed.