HSS Step Drill Bit 4–42mm | 14-Step Cone Cutter for Metal & Wood
HSS Step Drill Bit 4–42mm | 14-Step Cone Cutter for Metal & Wood
DAZZLEEX HSS Step Drill Bit 4–42mm | 14-Step Cone Hole Cutter
Tackle any drilling project with confidence using this high-speed steel (HSS 4241) step drill bit. Engineered with a coated cone design and 14 graduated steps ranging from 4mm to 42mm, this single bit replaces an entire set of standard drill bits — making it the go-to tool for metalworkers, woodworkers, electricians, and DIY enthusiasts alike.
Why Choose This Step Drill Bit?
- 14 Precision Steps: 4 – 6 – 9 – 12 – 15 – 18 – 21 – 24 – 27 – 30 – 33 – 36 – 39 – 42mm — one bit covers a huge range of hole sizes.
- Premium HSS 4241 Material: High-speed steel construction delivers exceptional hardness and heat resistance for prolonged drilling sessions.
- Coated Cone Surface: The surface coating reduces friction, extends bit life, and helps maintain sharp cutting edges through repeated use.
- Multi-Material Versatility: Designed to cut clean holes in steel, brass, aluminum, wood, plastic, and other common materials.
- Round Shank Design: 9.5mm diameter round shank fits securely in standard drill chucks — no slipping, no fuss.
- Compact & Robust: Approximately 99mm in total length — easy to handle and store.
Specifications
| Model | 4-42mm (14 Steps) |
| Step Sizes | 4 – 6 – 9 – 12 – 15 – 18 – 21 – 24 – 27 – 30 – 33 – 36 – 39 – 42mm |
| Material | High Speed Steel (HSS 4241) |
| Shank Type | Round Shank |
| Shank Diameter | 9.5mm |
| Total Length | Approx. 99mm |
| Country of Origin | Made in China |
Package Contents
- 1 × HSS Step Drill Bit (4–42mm, 14 Steps)
Compatible Applications
Perfect for use on electrical panels, junction boxes, sheet metal fabrication, woodworking projects, plastic enclosures, conduit fittings, and general DIY tasks. Works with any standard corded or cordless drill.
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Note: Colors may appear slightly different due to monitor settings and lighting conditions. Please allow minor measurement tolerances of ±1–2mm.
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Frequently Asked Questions
Q: What materials can this HSS step drill bit cut through?
A: This 4–42mm HSS step drill bit is designed to cut clean holes in a wide variety of materials including steel, brass, aluminum, wood, and plastic. The high-speed steel 4241 construction and coated cone surface make it effective across both soft and harder materials commonly found in DIY and professional applications.
Q: Does this step drill bit fit standard cordless drills?
A: Yes. The round shank is 9.5mm in diameter and is compatible with most standard 3-jaw drill chucks found on both corded and cordless power drills. Simply tighten the chuck securely before use to prevent slipping.
Q: How many hole sizes can I drill with this single bit?
A: This cone step drill bit features 14 graduated steps, allowing you to drill holes in sizes of 4, 6, 9, 12, 15, 18, 21, 24, 27, 30, 33, 36, 39, and 42mm — covering a broad range with one convenient tool.
Q: Is a carrying case included with the step drill bit?
A: The package includes 1 × HSS Step Drill Bit (4–42mm). No carrying case is included. We recommend storing the bit in a dry, protected location to maintain its coating and cutting edges.
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.