Dan: The ones I seem to use the most are #5,6,7 and 8 belt punches and 3/4, 1 1/8, 1 1/2, 1 3/4 and 2 inch oblong punches. I like single tube better than drive punches as they are not as thick as drive punches and cut a smaller hole. one of the few times I use a drive punch is to punch holes for blevins buckles then I use #8 for rivets I use a drill and bit