Tungsten Carbide Single Cut Rotary Roller SET 1/8 "" Shank Fit Shank diameter: 3mm, Shank length: 35mm, Cutting diameter: 6mm Material: Tungsten | Use of carbide: Rotary burrage, high micro hardness, high abrasion resistance, good toughness High performance on processing copper, aluminum, alloy, iron, marble, jade, steel, glass, wood and plaster, etc Highly recommended for polishing metals and plastics, jewelers, lapidary use, hobbies, crafts, craft modeling, home repair and much more Character: Quality of treatment, high finish. Easy to learn, easy to use, safe and reliable. Can be made into a variety of high-precision shaped mold cavity. Durability than the high-speed steel tool to improve ten times, more than 200 times higher than the small grinding wheel. Specification: Drill size: 6mm Shaft diameter: 3mm Compatibility: small rotary tools and high speed polisher The optimum rotation speed is 6000-40000 r / min Included: 10 solid tungsten steel ledges in storage box Brand: It is recommended to use water as a lubricant when using these burrs. All burrs in this set have a tail size of? "" (3mm), which allows them to be compatible with most grinders and rotary tools when you form, grind and finish your job with precision. When the job or project is done, you will love to place your burrs in the compact storage case so that you can store, organize and transport this set for future use. Content: 10pcs Rotary Cutter Tools