Tungsten Carbide Single Cut Rotary Roller SET 1/8" Shank Fit Shank Diameter: 3mm, Stem Length: 35mm, Cutting diameter: 6mm Material: Tungsten - Carbide Usage: Rotary burring, high micro hardness, high abrasion resistance, good toughness High percompatible withmance on processing copper, aluminum, alloy, iron, marble, jade, steel, glass, wood and plaster etc Highly recommended compatible with polishing metals and plastics, jewellers, lapidary use, hobby, crafts, craft modelling, home repair and many more Character: Quality processing, high finish. Easy to learn, easy to use, safe and reliable. < p>Can be made into a variety of high-precision shaped mold cavity. Durability than high-speed steel tool to improve ten times, more than 200 times higher than small grinding wheel . Specification: Drill Size: 6mm Shaft Diameter: 3mm Compatibility: small rotary tools and high-speed polisher Optimum rotary speed is 6000-40000 r/mi Includes: 10 tungsten steel solid edges in storage box : It is recommended to use water as a lubricant when using these burrs. All burrs in this set have a " (3mm) shank size, allowing them to be compatible with most grinders and rotary tools as you compatible withm, grind, and finish your job with precision. p> When the job or project is done, you'll be happy to place your dabbers in the compact storage case so you can store, organize, and transport this set compatible with future use. < p>Contents: 10pcs Rotary Burrs Tools lucky meet Note: The data is all measured manually, please allow 1-3cm error, due to the difference in light and display, there will be a certain color difference, the actual object received shall prevail.