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Size: Bit Diameter: 6.9mm; Flute Length: 58mm / 2.3"; Total Length: 108mm / 4.3"; Shank Diameter: 6.9mm Feature: After using full grinding process, it has stronger cutting ability and longer service life. Material: Cobalt-containing high-speed steel drill bit, high wear resistance and toughness, not easy to break, sharp cutting edge, effectively improving drilling speed. Application: Suitable for processing non-ferrous metals (such as copper and aluminum), non metallic and ferrous metals (such as iron, steel and stainless steel). The advantages of full grinding: High geometric precision, strong cutting ability., Weight: 0.1984160358 pounds, Manufacturer: Sourcingmap