If you have a DMT D8XX, it'll work great, A D8C will take a while. The Barber hones are the hardest substance known to man...Really, I collect them, Some have chips and it takes forever to get them out....It'll leave it scratched up, you'll need to hit it with wet sandpaper. I start at 220, and work my way up to 1000 on a piece of tile of course. When done, they look brand new...Good Luck...
P.S. +1, They cost anywhere from 15 to 28 dollars or so....
Rich