Excellent for copper
"These are great for copper rivets. #9 take a little effort, but not bad. #12 is a piece of cake. I recently tried it on #9 brass rivets. . . um, no. I just ordered some #12 brass that haven't arrived, so I can't comment on that. But these are FANTASTIC for #12 copper for sure (and still good for #9 copper as long as you don't have to do a ton of them)."




