Specification:Brand newMaterial: Wool.Wheel Dia : 25mm(Approx.0.98").Shank Dia: 3mm(Approx.0.12").Shank Length: 42mm(Approx.1.65").Suitable for :wood, nuclear carving, jade, ivory, etc.Widely used in : cylinder bore mill, pipe, grinding, mold, medical equipment, beauty equipment, gold and silver jewelry, stainless steel, glass equipment, machinery parts and other special refining process. Install on electric grinder.Package Included:10 * Polishing Buffing Wheels(Packed Safely in Bubble Bag)Note:Please allow minor error due to manual measurement.Due to the difference between different monitors, the picture may not reflect the actual color of the item.