The Dremel 490 Dust Blower offers an innovative solution for improving visibility when using your Dremel rotary tool because it removes fine debris from your line-of-sight. It’s great for detailed projects, sanding, engraving and carving and it can also be used on the 225-01 Flex Shaft attachment. The Dust Blower accessory fits all Dremel rotary tools using the standard collet nut except the Dremel 4200. Re-fit your existing Dremel rotary tool with the Dremel Dust Blower to see your work better. Fits tool model: 4000, 400, 3000, 300, 398, 395, 285, 275, 200, 100, 8200, 8000, 7700, 750.