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4mm - 25 mm Shank Diameter Solid Carbide End Mill , 2 - 4 Flute End Mill Description 1. Using raw materials with unique properties and high purity ensure Chintungsten’s tungsten solid carbide end mills consistent high quality. 2. This kind of end mills is made of tungsten solid carbide end mill and has an excellent combination of strength and toughness. 3. The unique tool design reduces vibration at high load applications. We use 100% original raw material, the micro grain