What's involved with the STM kit? Do we have to get a different style of vibratory cleaner to use with the steel media?
https://www.stainlesstumblingmedia.com/
Stainless Tumbling Media | Stainless Tumbling Media Package
It's not a vibratory tumbler. You need the rotary style.... The biggest difference is that you use water.
Brass Cleaning & Reloading Tips and Instructions
--Mark