2 set tool:25 x Conical Polishing Wheel & 12 x Felt Bob and high quality.Many kinds of shapes and sizes, easy to use. Tightly compressed wool felt forms a good wheel for polishing and buffing. Suitable for Plastics, Metals, Jewelry and Other Small Parts. Usage: It is used for polishing and buffing on plastics, metals, jewelry and other small parts. Color : White, Silver Mandrel mounted white conical felt bob. Suitable for polishing and buffing jewelry, soft metal, wood, plastic, etc. Can be used with electric drills, electric grinders or other rotary tools. Material:Imitation wool + Felt, Metal Shape: Conical/Cylindrical Shank Diameter: 3mm (1/8 inch ) Wheel Diameter: 8mm/10mm/12mm Product Name : Mounted Felt Bob Felt Size : 8.5 x 18mm / 0.31inch x 0.7inch (DxL) Shank Diameter : 3mm / 0.12inch Total Length : 46mm / 1.81inch Package Contents: 5 x (3x8mm) Conical Polishing Wheel 5 x (3x10mm) Conical Polishing Wheel 5 x (3x12mm)Conical Polishing Wheel 5 x (3x10mm) Cylindrical Polishing Wheel 5 x (3x12mm) Cylindrical Polishing Wheel 12 x Felt Bob