I couldn't find it on the website (do I just **** at interweb?) but if it's like the Milwaukee it's only capable of taking an 1/8" collet. That's great for hobby/detail/model stuff, but not for reaming holes in steel or doing crude slots etc.
I understand you can't push a 12V cordless tool that hard, but I'd like the option to run 1/4" accessories as that's mostly all I keep in my toolbox.
For reaming holes in stead that is where a big rotory tool or drill comes into play. This is for finer work. I have put a cutting wheel on the dremmel 12v Li Ion, and it will cut through a RP wrench handle without an issue. Just make sure you get a good set of accessories .
Rotary tools typically take small shaft accessories only. Most rotary tools include 3/32" and 1/8" collets, with 5/32" and 3mm collets also being common.
When you get bigger than those sizes, the tool is generally called a die grinder.
BTW, Dremel marks their collets with rings to indicate their size. But the most common size, 1/8", has no rings. And aftermarket collets often do not have rings. So you are back to guessing and trying.
I've discovered that the collets are not generally interchangeable between brands, or even tools within a brand.