HSS Cobalt Twist Drill Bit 12mm–35mm Round Shank Metal Borer
HSS Cobalt Twist Drill Bit 12mm–35mm Round Shank Metal Borer
HSS Cobalt Twist Drill Bit – 12mm to 35mm | Round Shank Metal Hole Opener
Take your drilling projects to the next level with this high-speed steel (HSS) cobalt twist drill bit. Engineered for durability and precision, this spiral drill bit delivers clean, accurate holes through metal, wood, plastic, and more. Whether you're a seasoned tradesperson or a passionate DIY enthusiast, this versatile drill bit is a reliable addition to your toolkit.
Key Features
- Material: High-Speed Steel (HSS) with cobalt alloy for superior hardness and heat resistance
- Size Range: 12mm – 35mm diameter for versatile hole-making applications
- Overall Length: 148mm (5.83 in) for extended reach
- Shank Type: Round shank for secure, slip-free chuck gripping
- Spiral Flute Design: Efficient chip removal and reduced friction for smoother, faster drilling
- Compatibility: Works with standard power drills and drill presses
- Applications: Ideal for metal, wood, plastic, composite panels, and more
- Color: As shown in product images
Why Choose This Drill Bit?
The cobalt-enhanced HSS construction makes this drill bit exceptionally resistant to heat build-up — a common cause of bit wear and dullness. The spiral flute geometry ensures fast, efficient material removal while maintaining hole accuracy. The round shank is universally compatible with most drill chucks, making this bit incredibly easy to use right out of the box.
What's in the Box?
- 1 × HSS Cobalt Twist Drill Bit
Specifications
| Material | HSS (High-Speed Steel) with Cobalt |
| Diameter Range | 12mm – 35mm |
| Length | 148mm (5.83 in) |
| Shank Type | Round Shank |
| Flute Type | Spiral |
| Country of Origin | Made in China |
Note: Due to lighting and monitor variations, the color may appear slightly different from the actual product. Please allow for minor measurement tolerances due to manual sizing.
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Frequently Asked Questions
Q: What materials can this HSS cobalt twist drill bit cut through?
A: This HSS cobalt twist drill bit is designed to bore through a wide range of materials including metal (steel, aluminum, copper), wood, plastic, and composite panels. The cobalt alloy content makes it especially effective on harder metals that would quickly dull standard HSS bits.
Q: Is this drill bit compatible with standard drill chucks?
A: Yes. The round shank design is universally compatible with most standard keyed and keyless drill chucks found on handheld power drills and bench-top drill presses, ensuring a secure, slip-free grip during operation.
Q: How long is this twist drill bit?
A: The drill bit has an overall length of 148mm (approximately 5.83 inches), providing good reach and stability for a variety of drilling tasks. The diameter ranges from 12mm to 35mm depending on the size variant you select.
Q: Does the spiral flute design make a difference in performance?
A: Absolutely. The spiral flute geometry actively channels chips and debris away from the cutting zone as you drill, reducing friction, preventing clogging, and helping maintain a cleaner, more precise hole — even at higher drill speeds.
Production & Packaging Notice
To maintain high stock availability and fast shipping times, our items are sourced from multiple verified manufacturing facilities. While the core quality, materials, and product specifications remain identical, you may notice slight variations in the packaging design, manufacturing origin, or the wording of the printed instructions.