I saw this and Lowes has it for $30 and for some reason Amazon has it for $44, so I bought on a whim but its not a winner.

The promise was a rotary tool and vacuum tool that cleared the debris as say you were engraving or grinding.
It has the blue ring you turn to adjust that allows some vacuum to bypass and thus control speed. It has a few accessories and a clear guide for flat work. It fits most all dremel bits that are 1/8" diameter shank.

In reality the RPMs were low (I measured 15,000 with my tach and a smaller Ridgid shop vac) and it had low torque.
The hose - 1.25" diameter fitting - made it stiff and hard to handle.

I think its going back.
P.S. it did go back