Features: Made from tungsten carbide steel with good milling, cutting performance, ensuring high work efficiency. Have sufficient anti-bending strength, wear resistance, high hardness, high wear resistance and high strength. Sharp cutting edges, can be use for milling holes, grooves and edges on plates and the process will be smooth. Well polished surfaces are quite clean, neat, and there is no glitches or burrs on the shank. Many items or materials can be engraved such as circuit boards, plastics, copper, etc. Specifications: Material: Cemented carbide steel Cutting Edge Diameter Cutting Edge Length 0.5mm 1.8mm 0.6mm 1.8mm 0.7mm 2.7mm 0.8mm 3.5mm 0.9mm 4.5mm 1.0mm 5.5mm 1.1mm 6.0mm 1.2mm 7mm 1.3mm 8mm 1.4mm 8mm Shank Diameter: 3.175mm(1/8in) Total Length: 380.1mm Package Includes: 10 x End Mills Note: The color of stopper is random, please take the real one as standard. 1Made from tungsten carbide steel with good milling, cutting performance, ensuring high work efficiency 2Have sufficient anti-bending strength, wear resistance, high hardness, high wear resistance and high strength 3Sharp cutting edges, can be use for milling holes, grooves and edges on plates and the process will be smooth. 4Well polished surfaces are quite clean, neat, and there is no glitches or burrs on the shank 5Many items or materials can be engraved such as circuit boards, plastics, copper, etc