Cloth Wheel Diameter: 100mm / 4-inch; Hole Diameter: 4mm. Material: Made of cotton material, built with multiple layers of fabric, durable for use. Fit for Rotary Tools: Can be used with electric drills, electric grinders or other rotary tools. Application: Suitable for fine polishing of various gold and silver jewelry hardware products Suitable for fine polishing of various gold and silver jewelry hardware products. What You Get: 3pcs x Buffing Wheels. Different kinds of sizes to satisfy your needs., Manufacturer: Utoolmart