Not that this is rocket surgery or anything I invented, but I had one of my inline seaters rust up pretty good. I started doing my usual rust removal process and thought I would just throw the whole thing in the tumbler and see what happens. I have never seen this mentioned with these dies anywhere and the LE Wilson website doesn't say anything about it so I thought I would share. The die was in the tumbler with a bunch of .260 brass overnight and cleaned up really well. Used a Krazy Kloth to get it shiny and sprayed it with some One Shot. Anyway, something to consider if you use these dies. I wouldn't throw one of the micrometer heads in obviously. Use at own risk.