Harbor Freight - Gems and Junk

Anyone use their electrical knockout cutters? I need to cut one 1 inch hole to move a sub panel inside. @ $29 (minus the 20%) I get the whole set versus just one name brand cutter for that price.
I already have a 1/2 inch Greenlee (from my electrician apprentice days) brand but it would be nice to have a whole set, if they'll last more than one or two uses each.

You could use a 1-1/8 holesaw to cut a hole on your panel, for the subpanel.