Oh I see, so you use the trimmer dies to do the final sizing step while the initial sizer does the majority portion of the sizing. Back in 2020 I was inquiring M7 about what I need to start trimming brass on my press, they told me to just get the Bosch trimmer kit as it has Bosch's warranty on the router motor. Come to find out the die that came with the kit fits way too deep into the tool head so I think I may need to get their offset tool head now. Had they told me back then....