You need a Bristol wrench. Those normally come in sets that will have one of the proper size.
Glen, K9STH
Website: http://k9sth.com
--- On Mon, 12/8/08, Francesco Ledda <frledda at verizon.net> wrote:
From: Francesco Ledda <frledda at verizon.net>
I need to get the vfo shaft collar loose. It looks like I need a flute wrench; which size do i need?