It's useless for our engines.
Basically, it's a bead blaster. You put a little abrasive material in the unit... and it bead blast's the electrodes. Yes... it will work... but the problem is, in a 2-stroke, the internals of the plug will start to decay because of the heat and vibration. So... generally, cleaning a 2-stroke plug doesn't work.
This is a tool that came out of the 60's, when car engines would be running rich, and they would soot foul a plug.
I remember using one in the high school auto shop (in the mid 80's) and even back then... I thought... "Why am I using this?" The reason was... even after the plugs were clean... I had to solvent clean the plugs to make sure there wasn't any sand up in the insulator... then I had to dry them. And... back then... I could get Champion plugs for about $0.65 each.
So... do what you want... but I wouldn't waste the $$$ on it.