Includes (2) Sanding Discs. New, Bulk Packed.. Lasts 2x longer and removes 2x more material than regular Dremel sanding discs (411, 412, 413).. EZ Lock accessory for 7x faster accessory change compared to the regular Dremel sanding discs (411, 412, 413).. Great for light shaping, design allows for flat and edge sanding.. Patented EZ-Lock system for quick and easy accessory changes.. Compatible with the Following:Dremel: 4000, 400, 398, 395, 300, 285, 275, 200, 100, 8200, 800, 780,300,8220