Dremel was purchased recent;y by Robert Bosch, explaining why they now offer dozens of snooty accessories and models, big Kiosks in the big box stores, but no parts for the older, good ones.
My original still running fine Variable Speed #380 Moto-Tool is 1977 vintage. I love it and use it all the time. When I called them for a set of brushes a few years ago, a young woman said, "What model?, never heard of it, we don't have anything like that." I turned the brushes end for end.
My next one, a spare, is more recent and the bearings are rattling. Oh well.
Mosey