► ITM | Spiral Step Drills

Fast, Controlled Hole Sizing for Trade Professionals When speed & accuracy matter, ITM spiral step drills deliver flawless hole cutting through metal, plastic & sheet materials. Their spiral flutes clear chips quickly, reducing heat & preventing burrs for clean, round holes every time. Trusted by electricians, fabricators & installers, these...

Fast, Controlled Hole Sizing for Trade Professionals

When speed & accuracy matter, ITM spiral step drills deliver flawless hole cutting through metal, plastic & sheet materials. Their spiral flutes clear chips quickly, reducing heat & preventing burrs for clean, round holes every time. Trusted by electricians, fabricators & installers, these drills give professionals smooth performance & long service life.

Each bit is crafted from premium high-speed steel or titanium-coated alloy, engineered for low friction & consistent cutting under load. Their multi-step design eliminates the need to swap drill bits, saving time during repetitive hole sizing. For precision alignment & steady feed, trades often pair them with Power Tools to maintain constant RPM during cutting.

When not in use, spiral step drills are best protected in Tool Boxes & Bags designed to prevent edge damage. Workshops storing multiple sizes keep them sorted in Tool Organizers & Inserts for fast identification. For teams on the move, Rolling Site Boxes & Chests ensure safe transport across job sites without losing calibration or finish quality.

What’s in This Collection:

► Holemaker Spiral Flute Step Drill Set, 3 Piece, 4–20mm / 5–25mm / 6–30mm
‣ Multi-size kit covering most electrical, fabrication & maintenance hole ranges

► Holemaker Step Drill Spiral Flute, 9 Steps, 3mm Step Length, 4–20mm
‣ Compact precision bit for control panel & light-gauge steel applications

► Holemaker Step Drill, Spiral Flute, 12 Steps, 6mm Step Length, 6–38mm
‣ Ideal for large holes in thicker materials with stable feed control

► Holemaker Step Drill Spiral Flute, Electricians Sizes, 3mm Step Length, 6–32mm
‣ Designed for conduit, switchboard & electrical fitting installations

► Holemaker Step Drill Spiral Flute, 13 Steps, 3mm Step Length, 6–30mm
‣ Smooth, accurate cutting for sheet metal & composite panels

► Holemaker Step Drill Spiral Flute, 11 Steps, 3mm Step Length, 5–25mm
‣ Optimised for precision work with minimal chatter or vibration

► Holemaker Step Drill Spiral Flute, 13 Steps, Varied Step Length, 7–40.5mm
‣ Heavy-duty step pattern for wider diameter range & faster hole expansion

 

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  • ITM - HOLEMAKER STEP DRILL SPIRAL FLUTE, 13 STEPS VARIED STEP LENGTH, 7-40.5MM | SD7-40.5MM
    Holemaker - Step Drill Spiral Flute - 13 Steps Varied Length | SD7-40.5mm
    Holemaker Step Drill Spiral Flute - 13 Steps Varied Length | SD7-40.5MMDrill a range of hole sizes with one bit using the Holemaker step drill—ideal for sheet metal and enclosures.The Holemaker step drill drills a range of hole sizes with one bit—ideal for sheet...
    $209.50
    $233.69
    $209.50
  • ITM - HOLEMAKER STEP DRILL SPIRAL FLUTE, 13 STEPS, 3MM STEP LENGTH, 6-30MM | SD6-30MM
    Holemaker - Step Drill Spiral Flute - 13 Steps - 3mm Length | SD6-30mm
    Holemaker Step Drill Spiral Flute - 13 Steps - 3mm Length | SD6-30MMDrill a range of hole sizes with one bit using the Holemaker step drill—ideal for sheet metal and enclosures.The Holemaker step drill drills a range of hole sizes with one bit—ideal for...
    $135.50
    $140.92
    $135.50
  • ITM - HOLEMAKER SPIRAL FLUTE STEP DRILL SET, 3 PIECE, 4-20MM / 5-25MM / 6-30MM | SDSET-1
    Holemaker - Spiral Flute Step Drill - 4-20mm / 5-25mm / 6-30mm | SDSET-1
    Holemaker Spiral Flute Step Drill - 4-20mm / 5-25mm / 6-30mm | SDSET-1Drill a range of hole sizes with one bit using the Holemaker step drill—ideal for sheet metal and enclosures.The Holemaker step drill drills a range of hole sizes with one bit—ideal for...
    $249.45
    $283.92
    $249.45
  • ITM - HOLEMAKER STEP DRILL, SPIRAL FLUTE, 12 STEPS, 6MM STEP LENGTH, 6 - 38MM | SDL6-38MM
    Holemaker - Step Drill - Spiral Flute - 12 Steps - 6mm Length - 6 | SDL6-38mm
    Holemaker Step Drill - Spiral Flute - 12 Steps - 6mm Length - 6 | SDL6-38MMDrill a range of hole sizes with one bit using the Holemaker step drill—ideal for sheet metal and enclosures.The Holemaker step drill drills a range of hole sizes with...
    $245.00
    $227.14
    $245.00
  • ITM - HOLEMAKER STEP DRILL, SPIRAL FLUTE, 9 STEPS, 5.5MM STEP LENGTH, 4 - 12MM | SDL4-12MM
    Holemaker - Step Drill - Spiral Flute - 9 Steps - 5.5mm Length - 4 | SDL4-12mm
    Holemaker Step Drill - Spiral Flute - 9 Steps - 5.5mm Length - 4 | SDL4-12MMDrill a range of hole sizes with one bit using the Holemaker step drill—ideal for sheet metal and enclosures.The Holemaker step drill drills a range of hole sizes with...
    $84.00
    $74.46
    $84.00
  • ITM - HOLEMAKER STEP DRILL SPIRAL FLUTE, ELECTRICIANS SIZES, 3MM STEP LENGTH, 6-32MM | SD6-32MM
    Holemaker - Step Drill Spiral Flute - Electricians Sizes - 3mm Length | SD6-32mm
    Holemaker Step Drill Spiral Flute - Electricians Sizes - 3mm Length | SD6-32MMDrill a range of hole sizes with one bit using the Holemaker step drill—ideal for sheet metal and enclosures.The Holemaker step drill drills a range of hole sizes with one bit—ideal for...
    $135.50
    $140.92
    $135.50
  • ITM - HOLEMAKER STEP DRILL SPIRAL FLUTE, 11 STEPS, 3MM STEP LENGTH, 5-25MM | SD5-25MM
    Holemaker - Step Drill Spiral Flute - 11 Steps - 3mm Length | SD5-25mm
    Holemaker Step Drill Spiral Flute - 11 Steps - 3mm Length | SD5-25MMDrill a range of hole sizes with one bit using the Holemaker step drill—ideal for sheet metal and enclosures.The Holemaker step drill drills a range of hole sizes with one bit—ideal for...
    $79.00
    $79.98
    $79.00
  • ITM - HOLEMAKER STEP DRILL SPIRAL FLUTE, 9 STEPS, 3MM STEP LENGTH, 4-20MM | SD4-20MM
    Holemaker - Step Drill Spiral Flute - 9 Steps - 3mm Length | SD4-20mm
    Holemaker Step Drill Spiral Flute - 9 Steps - 3mm Length | SD4-20MMGenuine Holemaker hole-cutting tool, engineered in Australia for accurate, dependable performance in steel fabrication and mag drilling.► Key Features Genuine Holemaker — trade-grade quality Built for metal — durable construction Accurate hole...
    $49.45
    $51.06
    $49.45

Drill Smarter, Smoother & Stronger

ITM spiral step drills are trusted across Australia for their clean performance & unmatched reliability. Their precision-ground cutting edges bite evenly through sheet steel, ensuring burr-free finishes & perfect sizing. When working across multiple materials, they eliminate the need for pilot drilling — a huge advantage for trade crews under time pressure.

Professionals supplied through Industrial Shed Somerville VIC 3912 rely on these drills daily in fabrication shops, switchboard manufacturing & metal construction. Combining them with Drill Accessories ensures optimal feed control, while Measuring Tools confirm diameter accuracy after each pass.

For finishing or edge preparation after drilling, Grinding & Cut-Off Wheels smooth surfaces & remove burrs. To keep all bits ready for use, Storage Cabinets organize tools by size & type, while Workbenches provide a stable base for precision drilling setups.

Each ITM step drill is built for trade durability & backed by Industrial Shed’s Trade Guarantee, supported with Same-Day Dispatch for fast delivery & Tool Equipment Care for continued tool maintenance & calibration.

► Spiral flutes for faster chip removal & cooler cutting
► Titanium-coated & HSS options for extended tool life
► Multi-step design eliminates bit changes & saves time
► Supported locally with same-day dispatch & professional care

Frequently Asked Questions

What materials can spiral step drills cut through?

They’re ideal for mild steel, stainless, aluminium & PVC — perfect for trade fabrication or electrical installation.

What’s the benefit of spiral flutes over straight?

Spiral flutes eject chips faster, run cooler & create smoother edges under load.

Do these drills require cutting fluid?

Yes — using Cutting Fluids & Lubricants extends bit life & improves cutting speed.

Are they compatible with magnetic drills?

Smaller diameter models can be used with standard or magnetic base drills using adaptors.

Brands

Holemaker

Holemaker

► ITM | Spiral Step Drills

Fast, Controlled Hole Sizing for Trade Professionals

When speed & accuracy matter, ITM spiral step drills deliver flawless hole cutting through metal, plastic & sheet materials. Their spiral flutes clear chips quickly, reducing heat & preventing burrs for clean, round holes every time. Trusted by electricians, fabricators & installers, these drills give professionals smooth performance & long service life.

Each bit is crafted from premium high-speed steel or titanium-coated alloy, engineered for low friction & consistent cutting under load. Their multi-step design eliminates the need to swap drill bits, saving time during repetitive hole sizing. For precision alignment & steady feed, trades often pair them with Power Tools to maintain constant RPM during cutting.

When not in use, spiral step drills are best protected in Tool Boxes & Bags designed to prevent edge damage. Workshops storing multiple sizes keep them sorted in Tool Organizers & Inserts for fast identification. For teams on the move, Rolling Site Boxes & Chests ensure safe transport across job sites without losing calibration or finish quality.

What’s in This Collection:

► Holemaker Spiral Flute Step Drill Set, 3 Piece, 4–20mm / 5–25mm / 6–30mm
‣ Multi-size kit covering most electrical, fabrication & maintenance hole ranges

► Holemaker Step Drill Spiral Flute, 9 Steps, 3mm Step Length, 4–20mm
‣ Compact precision bit for control panel & light-gauge steel applications

► Holemaker Step Drill, Spiral Flute, 12 Steps, 6mm Step Length, 6–38mm
‣ Ideal for large holes in thicker materials with stable feed control

► Holemaker Step Drill Spiral Flute, Electricians Sizes, 3mm Step Length, 6–32mm
‣ Designed for conduit, switchboard & electrical fitting installations

► Holemaker Step Drill Spiral Flute, 13 Steps, 3mm Step Length, 6–30mm
‣ Smooth, accurate cutting for sheet metal & composite panels

► Holemaker Step Drill Spiral Flute, 11 Steps, 3mm Step Length, 5–25mm
‣ Optimised for precision work with minimal chatter or vibration

► Holemaker Step Drill Spiral Flute, 13 Steps, Varied Step Length, 7–40.5mm
‣ Heavy-duty step pattern for wider diameter range & faster hole expansion