6-Piece Step Drill Bit Set – 4-12 to 4-32mm Wood Hole Saw Kit
6-Piece Step Drill Bit Set – 4-12 to 4-32mm Wood Hole Saw Kit
6-Piece Step Drill Bit Set for Precision Wood Hole Punching
Take on any woodworking or assembly project with confidence using this versatile 6-piece step drill bit set. Featuring triangular handles for a secure, no-slip grip, each bit is precision-machined with straight flute (groove) ladder profiles that cut through wood cleanly and efficiently. The set covers a wide size range — 4–12mm, 4–20mm, and 4–32mm step bits plus 3-flute, 6-flute, and 8-flute saw drill options — giving workshop professionals, hobbyists, and DIY enthusiasts everything they need in one kit.
Made in Mainland China.
Key Features
- 6-Piece Complete Kit: Includes multiple step drill bit sizes (4–12mm, 4–20mm, 4–32mm) and saw drills (3, 6, and 8 flute) for maximum versatility.
- Triangular Handle Design: Anti-roll, ergonomic triangular shank ensures a firm grip and prevents the bit from rolling off workbenches.
- Straight Groove (Flute) Construction: Optimized flute geometry channels chips and debris away from the cutting zone for smoother, faster boring.
- Ladder / Step Profile: Each step is precisely sized so you can drill multiple hole diameters with a single bit — no need to swap out tools constantly.
- Woodworking Ready: Ideal for wood drilling, hole punching, furniture assembly, cabinetry, and general DIY applications.
- Length Range: 60–101mm bit lengths to suit a variety of drilling depths and workpiece thicknesses.
What's in the Box
- 3× Step Drill Bits (4–12mm, 4–20mm, 4–32mm)
- 3× Saw Drill Bits (3-flute, 6-flute, 8-flute)
Specifications
| Piece Count | 6 pcs |
| Step Drill Size Range | 4–12mm / 4–20mm / 4–32mm |
| Saw Drill Flutes | 3 / 6 / 8 |
| Length | 60–101mm |
| Primary Use | Wood Drilling / Hole Punching |
| Handle Type | Triangular (Anti-Roll) |
| Origin | Mainland China |
Perfect For
- Furniture makers and cabinet builders
- Construction and assembly workers
- Hobbyist woodworkers and DIY enthusiasts
- Home renovation and repair projects
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Learn more: OSHA guidance on hand and power tools
Frequently Asked Questions
Q: What materials can these step drill bits be used on?
A: This 6-piece step drill bit set is designed primarily for wood drilling applications, including softwoods, hardwoods, plywood, MDF, and similar wood-based materials commonly used in furniture making and DIY assembly projects.
Q: What hole sizes can I drill with this set?
A: The step drill bits cover hole diameters from 4mm up to 32mm across three bits (4–12mm, 4–20mm, and 4–32mm), letting you punch a wide variety of hole sizes without needing separate individual bits for each diameter.
Q: Are these bits compatible with standard power drills?
A: Yes. The triangular shank design fits standard drill chucks commonly found on cordless and corded power drills, ensuring a secure, slip-free connection during use.
Q: What is the difference between the step drill bits and the saw drill bits in this set?
A: The step (ladder) drill bits feature a stepped cone profile that allows you to drill multiple graduated hole sizes in one pass, while the saw drill bits (3, 6, and 8 flute) are designed for clean, fast circular cutting action — ideal for larger, precise openings in wood panels and boards.