Features: Made of tungsten carbide with good milling, cutting performance, ensuring high working efficiency. They have sufficient bending strength, wear resistance, high hardness, high wear resistance and high strength. Sharp cutting edges, can be used do mill holes, grooves and edges on the plates, and the process will be smooth. Well polished surfaces are quite clean, well-groomed, and on the handle does not ma any crackles ani burrs. Many items or materials can be engraved, such as printed circuit boards, plastics, stal stainless steel and copper. Technical data: Material: tungsten carbide (titanium coated) Shank Diameter: 3.175mm (1/8") Cutting edge diameter: 1mm (0.04") Length: 38mm (1.49") Cutting edge length: 9mm (0.35") Quantity: 10 The package includes: 10 x End Mills Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement.