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Materials & Applications
Compatibility
Materials & Applications
Recommended use cases for this product across common industrial materials and jobsite applications.
Stainless Steel
High-Strength Alloys
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Technical Description
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Champion 121CO 705C Cobalt Drill Set – 21-piece 1/16"–3/8" x 64ths
121CO is a Champion 705C heavy-duty cobalt jobber drill set with 21-piece of premium M42 cobalt high-speed steel drills. The set covers 1/16"–3/8" x 64ths for high-tensile materials and demanding metalworking applications.
Set Inclusions
21-piece set; fractional sizes 1/16" to 3/8" x 64ths; metal storage case.
Key Benefits
- Premium M42 cobalt HSS maintains a sharp cutting edge at high temperatures.
- 135° self-centering split point helps prevent walking for precise starts.
- Straight shanks fit compatible power drills, drill presses and CNC machines.
- Designed for stainless steel, high-strength alloys and other high-tensile materials.
- Made in USA and organized in a durable metal storage case.
Applications
- Stainless steel
- High-strength and high-tensile alloys
- Power drills, drill presses and CNC machines
- Professional maintenance, fabrication and metalworking
Technical Specifications
| Manufacturer part number | 121CO |
|---|---|
| Series | Champion 705C Cobalt |
| Product type | Heavy-duty cobalt jobber drill set |
| Set size | 21-piece |
| Included sizes | 1/16"–3/8" x 64ths |
| Tool material | Premium M42 cobalt high-speed steel |
| Point style | 135° self-centering split point |
| Shank | Straight shank |
| Drill length | Jobber length |
| Performance level | Heavy duty |
| Drilling application | Stainless steel and high-strength alloys |
| Storage | Metal storage case |
| Country of origin | Made in USA |
| Package quantity | 1 set |
How to Use
Select the drill size required for the hole and use the 121CO with a compatible power drill, drill press or CNC machine. Use the correct speed, feed, workholding and cutting fluid for the material, and clear chips regularly.
Important: Cobalt drills are heat-resistant but brittle. Avoid side loading, excessive feed pressure and forcing the tool.
Cutting tools may chip or shatter if misused or overloaded. Secure the workpiece, wear eye protection and follow the drill and machine manufacturer's operating instructions.
Most Interesting Product Feature
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Most Interesting Product Feature
- Premium M42 cobalt HSS maintains a sharp cutting edge at high temperatures for stainless steel and high-strength alloys
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