Cobalt Twist Drill, #50, 10pk
The Foredom A-8300 Series Cobalt Steel Twist Drills are precision micro drill bits designed for jewelers, metalsmiths, and precision craftspeople who require clean, accurate drilling in small-diameter applications. Made from premium cobalt steel, these drills provide excellent heat resistance, durability, and cutting performance compared to standard high-speed steel (HSS) drills.
Ideal for drilling precious metals, non-ferrous metals, and other small components, the A-8300 Series offers the strength and consistency needed for detailed jewelry fabrication, repair work, and fine-scale projects. Available in multiple wire gauge sizes, these drills are designed for use with small pin vises, rotary handpieces, and micro chucks.
Features & Benefits
- Premium cobalt steel construction for increased durability and heat resistance
- Maintains hardness at higher operating temperatures
- Produces clean, precise holes in small components
- Ideal for jewelry making, metalsmithing, and precision fabrication
- Suitable for drilling harder materials where standard HSS drills may wear faster
- Can be used in small pin vises, rotary handpieces, and micro chucks
- Available in a range of wire gauge sizes for detailed work
- Convenient multi-pack packaging helps provide replacement drills when needed
Specifications
- Manufacturer: Foredom
- Series: A-8300
- Product Type: Cobalt Steel Twist Drill
- Material: Solid cobalt steel
- Sizes Available: #50–#80 wire gauge
- Shank Compatibility: Small rotary handpieces and micro chucks
- Application: Precision drilling in jewelry, metalwork, and small components
- Maximum Speed: 20,000 RPM
- Packaging: 10-piece packs (size-specific)
Common Applications
- Drilling holes for jewelry assembly
- Creating settings and mounting holes
- Piercing and fabrication work
- Precision metalworking and hobby projects
- Small-scale repair and restoration work
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