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The EAGLE CUTTING TOOL C304-109-D is a size 9 cobalt jobber-length drill bit manufactured in the USA. Cobalt construction gives this bit the heat resistance and hardness needed to cut through tough materials including stainless steel, cast iron, titanium, and other hard alloys that would wear out standard high-speed steel bits quickly. The jobber-length flute design provides a balance between reach and rigidity, making it a reliable choice for general-purpose drilling in production and maintenance environments. Machinists, pipefitters, fabricators, and maintenance technicians reach for cobalt bits when the job demands durability and consistent performance across repeated use.
This bit is suited for use in drill presses, hand drills, and CNC setups where a standard jobber-length bit is required. It fits a wide range of drilling applications in industrial, commercial, and trade settings. The size 9 designation places it in the wire gauge drill series, commonly used when precise hole sizing is required for tapping, reaming, or clearance fits in metal fabrication and mechanical assembly work.
Designed as an OEM-style replacement or direct-use cobalt jobber drill for standard drill chucks accepting wire gauge size 9 bits in industrial, commercial, and trade drilling applications.
A licensed machinist or qualified tradesperson should secure the bit firmly in the drill chuck before use and verify the chuck key is removed prior to operation. Always wear appropriate eye protection and secure workpieces properly. Use cutting fluid or lubricant when drilling hard alloys to extend bit life and improve hole quality. Follow applicable workplace safety standards for rotating machinery.
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