6-Piece HSS Double-Ended Auger Drill Bits Set – 3mm to 6mm

6-Piece HSS Double-Ended Auger Drill Bit Set

Take your drilling projects to the next level with this versatile 6-piece High-Speed Steel (HSS) double-ended auger drill bit set. Engineered for precision and durability, each bit features cutting edges on both ends — doubling your usable life per bit. Whether you're working with metal, wood, aluminum alloy, or plastic, these compact twist bits deliver clean, accurate holes every time.

Made in Mainland China.

Why You'll Love This Set

• Double-Ended Design: Two usable cutting ends per bit means twice the value — flip and keep drilling when one end wears.
• HSS Construction: High-Speed Steel material provides excellent hardness and heat resistance for reliable performance across multiple materials.
• Multi-Material Compatibility: Suitable for stainless steel, iron, aluminum alloy, plastic, and wood — one set for virtually every project.
• 6 Sizes Included: 3mm, 3.5mm, 4mm, 4.5mm, 5mm, and 6mm diameters cover a wide range of drilling needs.
• Compact & Portable: Slim profile and lightweight design make these bits easy to store and carry to any job site.
• Compatible with Hand Drills & Bench Drills: Fits standard drill chucks for maximum versatility.

Specifications

• Material: High-Speed Steel (HSS)
• Drill Diameters: 3mm / 3.5mm / 4mm / 4.5mm / 5mm / 6mm
• Drill Edge Length: 10–16mm
• Total Length: 46.8–66mm
• Applicable Materials: Stainless steel, iron, aluminum alloy, plastic, wood
• Compatible Equipment: Hand drill, bench drill
• Quantity: 6 pieces
• Origin: Mainland China

Package Includes

• 6 × HSS Double-Ended Auger Drill Bits (one of each size: 3mm, 3.5mm, 4mm, 4.5mm, 5mm, 6mm)

Pro Tip

For best results when drilling through metal, use a bench drill rather than a handheld drill. A bench drill provides greater stability and torque, reducing the chance of bit slippage and ensuring cleaner holes with less effort.

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Safety & Standards Reference

For safe tool use and workplace safety guidelines, visit the OSHA Tools & Equipment Safety Resource.

Notes

• Colors may appear slightly different on screen due to monitor settings and lighting conditions.
• Please allow for minor measurement tolerances (±0.5mm) due to manual measurement processes.

Learn more: Drill bit

Frequently Asked Questions

Q: What materials can these HSS double-ended auger drill bits cut through?

A: These bits are designed to work with a wide range of materials including stainless steel, iron, aluminum alloy, plastic, and wood — making them ideal for both DIY and professional projects.

Q: What drill sizes are included in the 6-piece set?

A: The set includes six bits in the following diameters: 3mm, 3.5mm, 4mm, 4.5mm, 5mm, and 6mm — covering most common drilling applications.

Q: Are these bits compatible with standard hand drills?

A: Yes, these double-ended HSS drill bits are compatible with standard hand drills and bench drills. For metal drilling, using a bench drill is recommended for better stability and cleaner results.

Q: What is the advantage of a double-ended drill bit?

A: A double-ended (double-headed) drill bit has cutting edges on both ends. When one end becomes dull, simply flip the bit and use the other end — effectively doubling the lifespan of each bit and offering better value for money.