Shank diameter:1/8"(3mm),this sets for cutting, grinding, carving, engraving, shaping, sanding, cleaning, polishing and much more. | With steel wire brush for metal surface rust removal, ideal for cutting, grinding, polishing, milling, brushing, metal surface cleaning, derusting, dusting, deburring, stripping residue, etc | Tool kits include cutting disc, grinding head, grinding stone, sandpaper, polishing wheel, polishing paste, steel wire brush, connecting rods, etc | Perfect for using in the micro electronic devices and other industries(fine detail work on jade, ceramic, glass, wood, hardened steel, cast iron, stainless steel) | Product Color: Multicolor; Package Contents: Bit Rotary Tool Set Accessories 1/8" Shank Grinding Sanding Engraving Polishing Kit for Wood Dremel, # 3, Pack of 100