Alpha
Alpha Onsite+ Step Tip Impact Drill Bit — 4.8mm, ¼″ Hex Shank
Part No: C9STQRM048 | Barcode: 9313601021741 | Range: Onsite+
The Alpha Onsite+ Step Tip Impact Drill Bit in 4.8mm is engineered from fully ground premium M2 HSS and drills 6x faster than the market standard. The patented step tip design stays sharper for longer, creates burr-free holes, and eliminates the need for pilot holes. Fitted with a ¼″ quick-change hex shank for cordless impact drivers.
4.8mm
¼″ Hex Shank
6x Faster
M2 HSS
Step Tip
Burr-Free
Suitable For
Stainless Steel
Mild Steel
Wood
Plastic
Key Features & Benefits
- 6x faster than market standard — the step tip design combined with premium M2 HSS delivers dramatically faster drilling through steel and stainless.
- Patented step tip — eliminates pilot holes, reduces wandering, and stays sharper for longer with no jamming or binding.
- ¼″ quick-change hex shank — fits cordless impact drivers and quick-change chucks for rapid bit swaps without tools.
- Premium M2 HSS — fully ground high-speed steel for exceptional edge retention and durability across multiple materials.
- Burr-free holes — the step tip produces clean, centred holes without the jagged edges that require deburring.
- No jamming or binding — the step tip geometry prevents the drill from grabbing, making it safer and easier to control.
When to Use This Drill Bit
The C9STQRM048 in 4.8mm is designed for tradies drilling through steel, stainless steel, and sheet metal with a cordless impact driver. The ¼″ hex shank means instant bit changes onsite, and the step tip eliminates the time-consuming pre-drilling step. Available in sizes from 3.0mm to 13.0mm, with reduced-shank models available for larger diameters (14.0mm+).
See the Step Tip in Action
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. | Size | Shank |
|---|---|---|
| C9STQRM030 | 3.0mm | ¼″ Hex |
| C9STQRM032 | 3.2mm | ¼″ Hex |
| C9STQRM033 | 3.3mm | ¼″ Hex |
| C9STQRM035 | 3.5mm | ¼″ Hex |
| C9STQRM040 | 4.0mm | ¼″ Hex |
| C9STQRM042 | 4.2mm | ¼″ Hex |
| C9STQRM045 | 4.5mm | ¼″ Hex |
| C9STQRM048 ★ | 4.8mm | ¼″ Hex |
| C9STQRM050 | 5.0mm | ¼″ Hex |
| C9STQRM055 | 5.5mm | ¼″ Hex |
| C9STQRM060 | 6.0mm | ¼″ Hex |
| C9STQRM065 | 6.5mm | ¼″ Hex |
| C9STQRM068 | 6.8mm | ¼″ Hex |
| C9STQRM070 | 7.0mm | ¼″ Hex |
| C9STQRM075 | 7.5mm | ¼″ Hex |
| C9STQRM080 | 8.0mm | ¼″ Hex |
| C9STQRM085 | 8.5mm | ¼″ Hex |
| C9STQRM090 | 9.0mm | ¼″ Hex |
| C9STQRM095 | 9.5mm | ¼″ Hex |
| C9STQRM100 | 10.0mm | ¼″ Hex |
| C9STQRM102 | 10.2mm | ¼″ Hex |
| C9STQRM105 | 10.5mm | ¼″ Hex |
| C9STQRM110 | 11.0mm | ¼″ Hex |
| C9STQRM115 | 11.5mm | ¼″ Hex |
| C9STQRM120 | 12.0mm | ¼″ Hex |
| C9STQRM125 | 12.5mm | ¼″ Hex |
| C9STQRM130 | 13.0mm | ¼″ Hex |
| 9LMST140R | 14.0mm | Reduced (12.7mm) |
| 9LMST145R | 14.5mm | Reduced (12.7mm) |
| 9LMST150R | 15.0mm | Reduced (12.7mm) |
| 9LMST155R | 15.5mm | Reduced (12.7mm) |
| 9LMST160R | 16.0mm | Reduced (12.7mm) |
| 9LMST165R | 16.5mm | Reduced (12.7mm) |
| 9LMST170R | 17.0mm | Reduced (12.7mm) |
| 9LMST175R | 17.5mm | Reduced (12.7mm) |
| 9LMST180R | 18.0mm | Reduced (12.7mm) |
| 9LMST190R | 19.0mm | Reduced (12.7mm) |
| 9LMST200R | 20.0mm | Reduced (12.7mm) |
| 9LMST210R | 21.0mm | Reduced (12.7mm) |
| 9LMST220R | 22.0mm | Reduced (12.7mm) |
| 9LMST250R | 25.0mm | Reduced (12.7mm) |
★ You are viewing the highlighted variant. Other sizes in this series are also available.
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