Alpha
Alpha Onsite+ Step Tip Step Drill Tuffbox Set — 3 Piece Straight Shank
Part No: SM3STDSD-B | Barcode: 9313601027279 | Range: Onsite+
The Alpha Onsite+ Step Drill Tuffbox Set packages three straight-shank step drills in a heavy-duty carry case. Each drill features the patented composite Z-cut design with two cutting edges per step and AlTiN coating, delivering 3x the efficiency and lifespan of standard step drills. Straight shanks provide maximum grip in drill chucks and drill presses.
3pc Set
Straight Shank
Composite Z-Cut
AlTiN Coated
3x Lifespan
Tuffbox Case
Suitable For
Stainless Steel
Mild Steel
Wood
Plastic
Key Features & Benefits
- Complete 3-piece straight-shank set — covers the most common step drill size ranges in one organised kit for workshop and drill press use.
- Straight shanks for maximum grip — fits standard 3-jaw drill chucks and drill presses securely with no slip under heavy load.
- Durable Tuffbox carry case — protects cutting edges in transit and keeps the set organised on the job site.
- Composite Z-cut technology — two cutting edges per step aggressively remove metal and clear chips for faster, cleaner cuts.
- AlTiN coating — extreme temperature resistance for sustained performance in stainless steel.
- Patented step tip — eliminates pilot holes and wandering for precise, burr-free starts every time.
When to Use This Set
The SM3STDSD-B is the drill press and workshop version of the Onsite+ step drill family. The straight shanks lock securely into 3-jaw chucks, making these ideal for fabrication shops and metalworkers who need consistent, repeatable hole quality. For cordless impact driver use onsite, consider the hex-shank Tuffbox set (SM3STQRSD-B) instead.
Authorised Australian Dealer — This product is sourced directly from Alpha Tools Australia and is backed by full Australian manufacturer warranty and local support.
Product Specifications
| Part No. | Type | Size Range | Shank |
|---|---|---|---|
| 9STM4-M12DSD | Step Drill | 3.3–10.2mm | Straight |
| 9STM4-12DSD | Step Drill | 4–12mm | Straight |
| 9STM8-20DSD | Step Drill | 8–20mm | Straight |
| 9STM9-19DSD | Step Drill | 9–19mm | Straight |
| 9STQRM4-12SD | Step Drill SF | 4–12mm | ¼″ Hex |
| 9STQRM4-20SD | Step Drill SF | 4–20mm | ¼″ Hex |
| 9STQRM6-30SD | Step Drill SF | 6–30mm | ¼″ Hex |
| SM3SDTP-B | Thundermax Set | 3pc Set | Mixed |
| SM3STDSD-B ★ | Tuffbox Set | 3pc Set | Straight |
| SM3STQRSD-B | Tuffbox Set | 3pc Set | ¼″ Hex |
★ You are viewing the highlighted variant. Other sizes and types in this series are also available.
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