
Material: Tungsten Use of cemented carbide: rotary burrs, high micro hardness, high abrasion resistance, good toughness High performance in processing copper, aluminum, alloys, iron, marble, jade, steel, glass, wood and gypsum, etc. Highly recommended for polishing metals and plastics, for jewelers, for use as stone grinders, for hobby, arts and crafts, model making, home repairs and much more. Character: Quality workmanship, high-quality finish. Easy to master, easy to use, safe and reliable. Can be processed into a variety of high-precision mold cavities. Improve durability than high speed steel tool by ten times, more than 200 times higher than the small grinding wheel. Specification: Drill size: 6 mm Shank diameter: 3 mm Compatibility: small rotary tools and high speed polishers The optimal rotation speed is 6000-40000rpm. Included: 10 solid tungsten steel edges in a storage box Brand: It is recommended to use water as a lubricant when using these burrs. All burrs in this set