Size - 10mm x 24mm rubber grinding mounted points with 2.35mm shank, lightweight and portable Material - Made of silicone and corundum abrasive, good grinding effect and long-lasting performance. Feature - Excellent stability for both grinding and polishing and it's not burnt the workpiece during used Application - Suitable for polishing, and buffing wood, jade, metal, glass, stone, bead, handicrafts, and other products to make the surfaces cleaner and brighter. Great for cleaning and smoothing jewelry after soldering, work well for polishing and rounding the rough edges of rings. Usage - can be installed on electric rotary tools such as grinders, electric drills, and more, easy to use, and time-saving.