Bore size: approx.16mm,5/8 inchMax. rpm: 15300/minWear resistance, uniform grinding effect.Less dust and low noise.Durable for use.Very fast removal of paint or rust without damaging the original surface.Clog resistant, strips fast and can be used for all coating and surfaces.For use with most makes of 100mm angle grinders.Used for surface preparation, conditioning and finishing.Ideal for removing, lacquer and paint coating on wood, stone, metal and fiberglass surfaces.Package included:5pcs x grinder wheelOnly the above package content, other products are not included.Note: Light shooting and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.If the quality of the product is not good, please contact us directly. If you have any questions or questions, please feel free to contact us.