Includes (1) Abrasive Brush. New. Allows sanding of contours, details, and hard-to-reach areas. Built-in polishing compound: rubber bristles have abrasive inside; no need for polishing compound. Removes exterior surface layer without damaging the base layer below. Sand delicate surfaces. Compatible with the Following: Dremel: 4000, 400, 398, 395, 300, 285, 275, 200, 100, 8200, 800, 780,300,8220