This...
Dillon has been making these for quite a while, and they're very customer oriented, and a bone-stock 550 is pretty much a perfect device as is.
If you're itching to buy extras, then spend $7 on a set of SAE hex-head T-wrenches and mount them by your press:
https://www.harborfreight.com/sae-t-...-pc-69369.html
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