Designed for Die Grinder, Dremmel Tool or Rotary Drill. * Material: cast iron, cast steel, carbon steel, alloy steel, stainless steel and other materials. * Material: cast iron, cast steel, carbon steel, alloy steel, stainless steel and other materials. * Size: 100 X 65 X 15 mm, Shank: 3 mm, Cutter head size: 3mm. * Assorted shapes include: ball, cone, rounded cylinder, flat top cylinder. * The machining hardness can reach to HRC70. * Sharp and sturdy, processing all kinds of metal and non-metal. * Suitable for deburring and polishing. * Package includes: 20 Pcs of burr set. *