My vacuum started squirting tiny black plastic balls all over the place and smelled like it was about to catch fire. I checked and found that the problem was with the brushroll - it seemed like it suddenly melted for no good reason as it wasn't clogged, stuck or anything like that. I figured there must be a way to fix this rather than buying a brand new vacuum cleaner and indeed Revane had a role to play. It snapped right into place - no tools required, just remove the belt, remove the old one,