Trimmer advice

You will have to buy a case specific length gauge from lee and that rod should also come with a shell holder.
https://www.midwayusa.com/product/10...nd-shellholder

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You will then screw the right most piece of your kit into the shell holder. You can chuck that up in a drill and you'll want to if you have any number of these to do. So you'll get the holder in the drill and then you'll slide a case rim into it and tighten it down. The rod will screw into the second piece of your kit and then you'll feed it down into the case. Turn the drill on and run it until you feel it stop grabbing material. Then you can use the left most piece of your kit to chamfer and deburr. Third from the left piece is to scrape your primer pockets. You'll use this by itself.

I also recomemd you get some some of those rubber nitrile dipped cott gloves as the little pieces will start to cramp your hands up. Just makes it much more pleasurable.