A Distturbulator
Was Eurekas answer to the Hoovers beater bars, it had 3 rows of bristles, one row was short and very stiff, the others softer, nothing, and I mean nothing cleans any better, it really digs out the dirt., was in all Eureka uprights from the late 40s thru mid to late 60s, much better than the Vibra Groomers that came after it.all the square handle uprights had it, 250-255-260 ...