HSS Titanium Step Drill Bit Set 15-Pc & 5-Pc Center Punch

15-Piece HSS Titanium Step Drill Bit Set with 5-Piece Automatic Center Punch

Upgrade your workshop with this comprehensive drilling combo — 15 high-speed steel (HSS) titanium-coated step drill bits paired with 5 spring-loaded automatic center punches. Whether you're drilling through wood, sheet metal, steel, or plastic, this set delivers precise, clean holes every time without the clutter of dozens of separate bits.

Step Drill Bit Highlights

• Replaces 28 individual drill bits — 3 step drill bits cover an extensive range of hole sizes in one compact kit
• Included sizes:
  • 5-step bit: 4–12mm (4, 6, 8, 10, 12mm)
  • 9-step bit: 4–20mm (4, 6, 8, 10, 12, 14, 16, 18, 20mm)
  • 10-step bit: 3–12mm (3, 4, 5, 6, 7, 8, 9, 10, 11, 12mm)
• HSS + Titanium coating — exceptional hardness and long-lasting durability through tough materials
• Two-fluted design — faster, smoother cutting action with reduced friction and heat build-up
• Tri-flat shank — firm, slip-free grip in any standard drill chuck
• Versatile compatibility — cuts cleanly through wood, sheet metal, steel, plastic, and other surfaces
• Gold finish for easy step identification at a glance

Automatic Center Punch Highlights

• Spring-loaded, high-impact strike — just press against the surface; no hammer needed
• Adjustable cap — dial in the striking force to suit the material and task
• Heat-treated alloy steel tip — sharp, precision point that stays accurate over time
• Corrosion-resistant brass body with non-slip knurled grip for confident control
• Marks hole locations accurately before drilling or screwing, eliminating bit wander
• Works on wood, metal, and plastic surfaces

What's in the Box?

• 15 × Metric Step Drill Bits (3 styles × 5 units each)
• 5 × Automatic Center Punches

Specifications

Note: Due to lighting and display differences, the item's color may vary slightly from photos. Measurement tolerance is ±1–3mm.

For guidance on safe tool use and drill bit best practices, visit OSHA's Hand & Power Tools Safety Resource.

Frequently Asked Questions

Q: What materials can these HSS titanium step drill bits cut through?

A: These HSS titanium step drill bits are designed to cut through a wide range of materials, including wood, sheet metal, mild steel, and plastic. The titanium coating adds hardness and reduces friction, allowing smoother, faster drilling across all these surfaces.

Q: How many hole sizes does this step drill bit set cover?

A: The three step drill bits collectively cover 24 distinct metric hole sizes ranging from 3mm to 20mm, effectively replacing 28 individual drill bits. The three bits include a 5-step (4–12mm), a 9-step (4–20mm), and a 10-step (3–12mm).

Q: How does the automatic center punch work?

A: Simply press the spring-loaded tip against your marked surface — the internal spring mechanism delivers an automatic, high-impact strike that creates a precise dimple to guide your drill bit or screw, eliminating wandering. The adjustable cap lets you control the striking force for different materials.

Q: Are these step drill bits compatible with standard drill chucks?

A: Yes. The step drill bits feature a tri-flat shank design that fits securely into standard drill chucks, preventing slipping and ensuring a firm, safe grip during use.

Q: Is this set suitable for both professionals and DIY home use?

A: Absolutely. This 20-piece combo set is ideal for professional tradespeople and home DIY enthusiasts alike. The range of sizes and the convenience of step drill bits make it a versatile addition to any toolkit for woodworking, metalworking, and general home improvement projects.