Skip to product information

🔩 3-Piece Spiral Step Drill Bit Set – Multi-Size Hole Cutter with 1/4" Hex Shanks

🔩 3-Piece Spiral Step Drill Bit Set – Multi-Size Hole Cutter with 1/4" Hex Shanks

★★★★★ (209 Reviews)
United States Flag
MADE IN State of Colorado
SHOPIFY SECURE
Regular price $29.99
Regular price $29.99 Sale price
SAVE Sold out
 

BUNDLE & SAVE

🔩 3-Piece Spiral Step Drill Bit Set – Multi-Size Hole Cutter with 1/4" Hex Shanks

🔩 3-Piece Spiral Step Drill Bit Set – Multi-Size Hole Cutter with 1/4" Hex Shanks

Regular price $29.99
Regular price $29.99 Sale price
SAVE Sold out
Global Delivery
Worldwide Shipping
Fast dispatch with tracking updates
Ready To Ship
24–48H
›
Oct 7th
Ordered
Oct 8th – Oct 9th
Order Ready
Oct 17th – Oct 19th
Estimated Delivery
Tracking information sent once your order ships
MULTI-SIZE DRILLING MADE SIMPLER

ONE BIT.
MORE HOLE SIZES.

Tired of swapping drill bits every time you need a different hole size? This spiral step drill bit lets you start small and enlarge holes progressively without changing bits for every diameter.

🔩 Step Drilling ⚙️ Spiral Flutes 🔧 1/4" Hex Shank
Black and silver spiral step drill bit showing multiple diameter markings and hex shank
LESS SWITCHING · MORE WORKING

Stop the Bit-Swap Shuffle.

Different hole diameters often mean stopping to change drill bits. With a stepped cutting profile, multiple hole sizes are available on one tool within its working range.

STANDARD BITS

Change to another bit when a different diameter is needed.

STEP DRILL BIT

Move through different diameters using one stepped bit.

Before and after comparison of several conventional drill bits versus one spiral step drill bit
START SMALL · STEP UP

The Right Diameter, One Step at a Time.

Begin at the pointed tip and advance through the cutting steps to enlarge the opening. Stop at the diameter your project requires.

1
Mark & Secure

Mark the drilling position and clamp the workpiece firmly.

2
Begin at the Tip

Start with the smallest cutting section using suitable drill settings.

3
Advance to Size

Progress through the steps and stop at the required diameter.

Spiral step drill bit progressively cutting holes of different sizes into a clamped metal plate
SPIRAL CUTTING DESIGN

Built to Move Chips Out.

Deep spiral flute channels provide a path for metal shavings to move away from the cutting area. The stepped cutting edges create progressively larger openings.

🌀 Spiral Flutes

Channels help carry chips away from the drilling zone.

🔩 Stepped Edges

Multiple cutting diameters arranged along one bit.

Close-up of spiral flute channels and stepped cutting edges on a black and silver step drill bit
COMPATIBLE DRILL CONNECTION

A Familiar 1/4-Inch Hex Shank.

The six-sided shank is designed to fit a compatible drill chuck or bit holder. Its shaped profile provides a defined gripping surface for the tool.

1/4" Hex Profile

A 6.35 mm hexagonal shank design.

Secure Connection

Check fit and secure the bit properly before drilling.

Spiral step drill bit installed in a drill chuck with detail of its quarter-inch hexagonal shank
READY FOR PRACTICAL PROJECTS

Make Room for the Next Fix.

Whether you're preparing mounting brackets, adjusting holes in suitable sheet metal or working on workshop repairs, a stepped bit gives you more diameter choices without reaching for a different bit each time.

🔧 Mounting Brackets

Create or enlarge holes for suitable hardware projects.

⚙️ Metal Panels

Adjust opening sizes in appropriate sheet-metal work.

Spiral step drill bit on a metal workshop bench surrounded by brackets and sheet metal panels
THREE BITS · THREE SIZE RANGES

Choose the Bit That Fits Your Job.

The three-piece collection covers different stepped drilling ranges, giving you a choice for smaller openings and wider hole requirements.

3/16"–7/8" Step Bit 01
1/8"–1/2" Step Bit 02
1/4"–3/4" Step Bit 03
3-Piece Collection

Different drilling ranges for varied projects.

Hex Shank Design

Each pictured bit uses a 1/4-inch hex shank.

Three spiral step drill bits displayed side by side with diameter ranges three sixteenths to seven eighths, one eighth to one half, and one quarter to three quarters inch
FROM PLANNING TO PROGRESS

Make Every Project Count.

Measure, clamp and drill with a bit suited to your task. From custom brackets to weekend workshop builds, keep your attention on the project rather than the next bit change.

DIY enthusiast wearing protective glasses and using a drill with a spiral step bit on a metal mounting bracket secured in a vise
PRODUCT DETAILS

Specifications at a Glance.

Product Type
Spiral Step Drill Bit Set
Set Quantity
3 Drill Bits
Cutting Design
Multi-Step Cutting Profile
Flute Style
Spiral Flutes
Shank Type
1/4" Hex Shank
Shank Measurement
6.35 mm
Bit 01 Range
3/16"–7/8"
Bit 02 Range
1/8"–1/2"
Bit 03 Range
1/4"–3/4"
Suggested Projects
Brackets & Metal Panels
GOOD TO KNOW

Frequently Asked Questions.

What is a step drill bit used for?

A step drill bit creates or enlarges holes through a series of cutting diameters, allowing multiple hole sizes within the bit's range.

How many drill bits are in the set?

The pictured set contains three spiral step drill bits with different diameter ranges.

What do the spiral flutes do?

The spiral channels provide a route for metal shavings to move away from the cutting area during drilling.

Will these bits fit my drill?

They feature 1/4-inch hex shanks. Check your drill chuck or bit holder for compatible fit and secure retention before use.

What should I do before drilling?

Clamp the workpiece, wear appropriate eye protection, select settings suitable for the material and keep hands clear of the rotating bit and sharp shavings.

MAKE YOUR NEXT PROJECT SIMPLER

Less Bit Changing. More Project Progress.

Three spiral step drill bits, multiple hole diameters and convenient hex shanks. Keep a flexible drilling option ready for your next workshop project.

🔩 3-Piece Set 🌀 Spiral Flutes ⚙️ Multi-Size Holes

NC0311

View full details