The Alpha SM23ST Onsite+ Step Tip Drill Bit Set is designed for fast, accurate drilling across a wide range of materials including steel, stainless steel, timber, plastic, and aluminium. Built for demanding jobsite use, this 23-piece metric drill set combines Alpha’s unique Step Tip technology with premium M2 high-speed steel to deliver exceptional speed, durability, and precision.
Tested against standard HSS jobber drill bits, Alpha’s Step Tip design drills up to 6× faster, while reducing heat build-up and helping the bit stay sharper for longer. The result is quicker hole starts, cleaner holes, and less downtime changing worn-out bits.
With a 1/4" quick-change hex shank, these drill bits are ideal for use with cordless drills and impact drivers, allowing rapid bit changes with no jamming or binding. The 135° split-point tip also helps prevent wandering, giving you more accurate starts without needing pilot holes.
Whether you're working on metal fabrication, construction, electrical installations, or general workshop tasks, the Alpha SM23ST drill set delivers reliable performance for professional use.
Step Tip Technology
Unique tip design reduces heat and keeps the cutting edge sharper for longer.
Up to 6× Faster Drilling
Delivers significantly faster drilling compared to standard HSS jobber drill bits.
135° Split Point Tip
Cuts faster and reduces bit wandering for precise hole starts.
Impact Driver Compatible
1/4" quick-change hex shank allows easy use with impact drivers and cordless drills.
Premium M2 High-Speed Steel
Fully ground HSS construction provides extended tool life and durability.
Clean, Burr-Free Holes
Produces smooth, round holes with minimal burring.
No Pilot Hole Required
Step tip design allows fast, accurate hole starting.
Steel
Stainless steel
Aluminium
Timber
Plastic
Ideal for builders, electricians, plumbers, metalworkers, and workshop professionals who require fast, reliable drilling on site.
Includes one drill bit in each size:
3.0mm
3.2mm
3.3mm
3.5mm
4.0mm
4.2mm
4.5mm
4.8mm
5.0mm
5.5mm
6.0mm
6.5mm
6.8mm
7.0mm
7.5mm
8.0mm
8.5mm
9.0mm
9.5mm
10.0mm
11.0mm
12.0mm
13.0mm
Supplied in a durable storage case to keep your drill bits organised and protected.
| Specification | Details |
|---|---|
| Model | SM23ST |
| Product Type | Step Tip Drill Bit Set |
| Pieces | 23 |
| Size Range | 3.0–13.0mm |
| Material | M2 High-Speed Steel |
| Tip Angle | 135° Split Point |
| Shank Type | 1/4" Hex Quick Change |
| Finish | Black & Amber |
| Max Cutting Depth | 3 × drill diameter |
| Compatibility | Cordless drills & impact drivers |
Traditional drill bits often struggle with heat build-up, slow cutting speeds, and wandering starts. The Alpha Onsite+ Step Tip range is engineered to solve these issues, delivering faster drilling, longer tool life, and cleaner results.
For professionals who need speed, reliability, and precision on the job, the Alpha SM23ST drill set is a practical addition to any toolbox.
