The Dremel 490 Dust Blower an progressive solution for improving visibility when using your Dremel roundabout tool because it removes elegant debris from your line-of-sight. It 's for elaborated projects, sanding, engraving and carving and it can also be victimized on the 225-01 Flex Shaft attachment. The Dust Blower add-on all Dremel roundabout tools using the measure collet nut except the Dremel 4200. your existing Dremel roundabout tool with the Dremel Dust Blower to see your work better. tool model : 4000, 400, 3000, 300, 398, 395, 285, 275, 200, 100, 8200, 8000, 7700, 750.