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The EAGLE CUTTING TOOL C304-136-D is a size 36 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, hardened alloys, and other hard metals that would quickly wear down standard high-speed steel bits. Jobber-length geometry provides the balance between reach and rigidity that trade professionals rely on for consistent, straight holes in demanding applications. At 0.12 pounds, it is a lightweight single-bit offering suited for individual tool purchase or restocking a shop set.
This bit is suited for metal fabrication, HVAC, plumbing, and electrical trades where drilling through structural steel, pipe hangers, sheet metal, angle iron, or other hard ferrous and non-ferrous materials is routine. Its cobalt composition handles the elevated temperatures generated by production drilling without losing edge integrity, making it a practical choice for both bench drill press work and portable drill use on the job.
Designed as a standard wire gauge size 36 jobber drill bit compatible with any 3-jaw chuck or drill press accepting standard straight-shank bits of the corresponding diameter.
Cobalt drill bits should be installed by machinists, fabricators, or qualified trade professionals familiar with proper drilling speeds and feeds for the target material. Secure the workpiece before drilling and use an appropriate cutting fluid or lubricant when drilling ferrous metals to extend bit life and improve hole quality. Never force a bit through material at excessive pressure, as this increases heat buildup and can cause premature edge failure.
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