Package Includes - 329 pieces of sanding bands of 3 diameters: 1/2, 3/8 and 1/43 diameters: 1/2, 3/8 and 1/4, 3 pieces per size; 338 pieces in total Different Grit Sanding - 60 grit.120 grit, 320 grit. Almost all polishing requirements are filled Applicable - This kit is suitable for home decoration, artistic crafts and woodworking, carving, polishing, circular grinding, metal polishing, polishing for rust removal, etc Wide Compatible - Compatible with all common size rotary tools, like Dremel, etc Easy to Store - With a plastic box, convenient to store and search ;which allows you to store everything properly after using it Color: Red Material: Aluminum Oxide Turn your Dremel or other rotary tool into a versatile high-speed sander. Accessories for sanding, shaping, grooving and finishing soft woods and hard, fiberglass and more. Drum Chucks Size: 1/2 inch, 3/8 inch and 1/4 inch Grit (abrasive sleeve): 60/120/320 Shank diameter: 3.17mm Weight:267g Package Included: 186 x 60 Gritabrasive sleeve 63 x 120 Gritabrasive sleeve 80 x 320 GritAbrasive Sleeve 3 x 1/2 Mandrels 3 x 1/4 Mandrels 3 x 3/8 Chucks