I may be wrong, but I think that is a 15/16 socket. We raised the head on our press so we could get enough room to change bits with out moving the ball.
No experience with The Vise IT as we only stock and sell Turbo products.
--------------------
"Why don't you call me sometime.....when you have no class" ~~Rodney Dangerfield to his college professor in Back to School ~~1986
Mike Craig-Columbus, OH