WhichOne › DIY store & garden › tool › power drill › drill accessory › drill bit › step drill bit

The best step drill bits in comparison

Guaranteed independent and reliable
Millions of satisfied users every year
Last updated on 30.06.2025

Filter

Sort

Brand:Reduced items only:

Best choice

STROTON Metric M35 Cobalt Step Drill Bit for Stainless Steel and Hard Metal (4-32mm/15 steps)

STROTON

free shipping

9,9

Check price

Show on Amazon

show more show less

Features

This Cobalt Step Drill Bit is Typically Capable of Running Two to Three Times Faster.Despite the Higher Price,the Cost Per Hole When Using Cobalt Drill Bit Will be the Lowest,Since It Can Produce So Many More Holes.
Grinding the Cutting Edge Three Times,with the High HRC and Heat Resistance of the Material,Desigh for Cutting through Stainless steel , Iron plate, Aluminum,Ducts,Wood,PVC and Plastic.
4-32mm 15 Steps (4mm,6mm,8mm,10mm,12mm,14mm,16mm,18mm,20mm,22mm,24mm,26mm,28mm,30mm,32mm)

£ 29.78

£ 34.99

DEWALT DT5030-QZ - Broca cónica para metal Extreme Impact Ø 14-25mm

DEWALT

free shipping

9,8

Check price

Show on Amazon

show more show less

Features

Dewalt accessory
Extremely sturdy, made from one piece
Durable and robust

£ 37.87

£ 29.99

£ 36.95

£ 40.76

£ 52.80

YOKOCUT Cobalt Step Drill Bit for Stainless Steel and Hard Metal, High Speed Steel 6% Cobalt Step Bit with AlTiN Coating, Cone Drill Bit Multiple Hole Cutter (4-32mm, 15 Steps)

YOKOCUT

14% off

free shipping

9,7

Check price

Show on Amazon

show more show less

Features

YOKOCUT Cobalt Step Drill Bit is Typically Capable of Running 3x Faster.Despite the Higher Price,the Cost Per Hole When Using Cobalt Drill Bit Will be the Lowest,Since It Can Produce So Many More Holes.
4-32mm 15 Steps (4mm,6mm,8mm,10mm,12mm,14mm,16mm,18mm,20mm,22mm,24mm,26mm,28mm,30mm,32mm)
Grinding the Cutting Edge Three Times,with the High HRC and Heat Resistance of the Material,Desigh for Cutting through Stainless steel, Steel, Sheet Metal, Iron plate, Aluminum,Ducts,Wood,PVC and Plastic.
YOKOCUT provides the best customer service and guarantee a full refund with 60-Day warranty and 24 7 customer care!

Amtech F0790 High Speed Steel Step Drill Bit Set, Cone Cutter (3 Piece)

Amtech

free shipping

9,7

Check price

Show on Amazon

show more show less

Features

Manufactured from titanium nitride Coated High-speed steel
Supplied storage pouch
Set Includes 1 x 15 step Bit (4 - 32mm) 1 x 9 step Bit (4 - 20mm) and 1 x 5 step Bit (4 - 12mm)

3PCS Premium HSS & Cobalt Spiral Step Drill Bit Sets (1/4"-7/8"), TiAlN Coated for Superior Durability, Cone Drill Bit for Sheet Metal, Stainless Steel, Aluminum, Wood, Plastic and DIY Projects

ss shovan

free shipping

9,6

Check price

Show on Amazon

show more show less

Features

VERSATILE 3PCS SET - Includes three step drill bits with varying sizes #1 (1 4" - 5 16" - 3 8" - 7 16" - 1 2"), #2 (1 4" - 9 32" - 5 16" - 11 32" - 3 8" - 13 32" - 7 16" - 15 32" - 1 2"), and #3 (5 16" - 3 8" - 7 16" - 1 2" - 9 16" - 5 8" - 11 16" - 3 4" - 13 16"- 7 8"). These metal drill bits come in a box so they can be storage well.
PREMIUM M35 HSS - Constructed from M35 high speed steel with 5% cobalt content, these step drill bits offer exceptional durability and superior cutting performance, even on tough materials like stainless steel ( 1mm).
ADVANCED TIALN COATING - The Titanium Aluminium Nitride (TiAlN) coating ensures high hardness and excellent wear resistance, extending the lifespan of the drill bits and maintaining sharpness for longer periods.
KIND TIPS - To prevent overheating and potential damage to the drill bits, always use cutting oil or spraying water during operation. Proper cooling extends the life and efficiency of the bits.
IDEAL FOR DIY & PROFESSIONAL USE - Whether you re a DIY enthusiast or a professional, this step drill bit set is perfect for various applications, including drilling in sheet metal, aluminium, copper, wood, plastic, and more. Not only can it enlarge holes, but it also deburrs, chamfers, and cutting.

Bosch Accessories 2608597524 4/6/8/10/12/14/16/18/20 mm HSS Step with 1/4-Inch Hex Drill Bits

Bosch

free shipping

9,5

Check price

Show on Amazon

show more show less

Features

EAN 3165140107396

£ 46.93

£ 57.95

Recommendation

RUKO HSSE-Co 5 Spiral Fluted Step Drill Bit with Split Point, Bright Finish, 4.0-12.0 mm Diameter, Size 0/9, 65.0 mm Length, R101050-9E

Ruko

free shipping

9,5

Check price

Show on Amazon

show more show less

Features

Stitch Cutting with split point DIN 1412 C
Suitable for sheet metal up to 4 mm

OCGIG 6-65mm Large HSS Spiral Groove Step Drill Titanium Coated Bit Hole Cutter

OCGIG

6% off

free shipping

9,4

Check price

Show on Amazon

show more show less

Features

Package includes 1 x 6-65mm HSS Groove Step Drill (13 Steps 6mm, 10mm, 15mm, 20mm, 25mm, 30mm, 35mm, 40mm, 45mm, 50mm, 55mm, 60mm, 65mm)
Self starting no need for a pilot hole.Cobalt coated to reduce friction and run at cooler temperature.
Spiral Design Flute spiral blade design makes the cutting faster and smoother, and automatically deburred from the hole when the drill bit is drilled
Application Suitable to cut holes in a variety of material like iron plate, aluminum plate, insulation boards, PVC sheet, ect

EZARC Step Drill Bit for Metal, M35 Cobalt Step Drill Spiral Flute Unibit Step Drill Bit (4-20mm) Wear-Resistant AlTiN Coated, 1/4" Hex Shank for Metal, Stainless Steel, Aluminum, Plastic

EZARC

free shipping

9,2

Check price

Show on Amazon

show more show less

Features

C-Profile Design EZARC Step Drill Bits feature a triple-flute design for enhanced stability, effectively addressing issues of deviation during the cutting process. Additionally, 'C-profile' cutting edge ensure smoother cutting and 2X increase in cutting speed.
9 Step Sizes Spiral flute design, featuring 9 distinct steps from 4 to 20 mm, offers seamless and effective drilling across various thicknesses, eliminating the need for multiple bits. Includes 4 mm, 6 mm, 8 mm, 10 mm, 12 mm, 14 mm, 16 mm, 18 mm, 20 mm.
M35 HSS Step Drill M35 cobalt high-speed steel achieves high levels of hardness and wear resistance through appropriate heat treatment. Its toughness and bending strength surpass those of standard high-speed steel, making this step drill bit more suitable for cutting harder materials, such as mild steel, medium hardness steel, stainless steel.
Please Note Follow these tips to keep your drill in top condition add cutting oil or spray water to cool during continuous use, the start-up speed will be slower due to the larger cutting angle, any quality problems, please feel free to contact us.

Flintronic Step Drill Bit Set, 5PCS(4-12mm, 3-13mm, 3-19mm, 5-22mm, 8-35mm), 1 Automatic Center Punch + 1 Twist Drill Bit, HSS Titanium Coated Double Slot Cone Cutting Drill with Pouch Case

flintronic

9,2

Check price

Show on Amazon

show more show less

Features

WHAT YOU GET 1 x Aluminum Case, 1 x 4-12mm, 1 x 3-13mm, 1 x 3-19mm, 1 x 5-22mm, 8-35mm Step Drills, 1 x Automatic Center Punch and 1 x Twist Drill Bit.
HSS & TITANIUM COATING High speed steel makes the step drill set more durable, titanium coating ensure to easily cut through steel sheets , aluminum sheets, copper & plastic & wood board and many other types of sheet metal.
DOUBLE CUTTING BLADES & THREE-SIDED SHANK Double cutting blades and X-type opening design ensure a faster and smoother cutting; The 3-sided shank design can prevent drill chuck sliping; With the smaller pressure, the sets can cut through the wood, sheet metal, steel and other surfaces.
TIME SAVER Covering assorted step sizes helps to drill or enlarge different holes in one bit without changing bit constantly.The size is laser etched into the metal, so it can be accurately drilled and will not wear even if it is used for a long time.

This ranking is created through algorithmic analysis of millions of products tailored specifically to your search. We aim to find the most suitable product for you based on manufacturer information and price. The ranking reflects our opinion and should serve as a good starting point for your purchase. We would like to point out that we have not tested the products ourselves and link to selected online shops and partners from which we may receive compensation.

You might also be interested in these step drill bits.

Blue Spot Tools Step Drill HSS Steel Titanium Cone Bit Hole Metal Cutter Tool 4-42mm

Manufactured from high speed steel for increased durability

~~£ 14.39~~

Check price

Sealey AK4744 HSS 4341 Step Drill Bit 4-22mm Double Flute, Silver

Double straight flutes for efficient swarf clearance

~~£ 20.94~~

Check price

Step Drill Bit #15 Double Fluted 7/8 To 1-3/8-Inch KLEIN TOOLS KTSB15,Black

Two flutes cut faster and keep bit cooler

free shipping

Check price

UK Drills HSS Step Drill Bits Set Titanium Coated 3pc 3-20mm for Drilling on Hard Metal, Stainless Steel, Cast Iron

SIZE 3 pc 3-20mm Bits. Step Drill Bit

Check price

MILWAUKEE #4 Step Drill Bit, 3

Soft grip handle design offers increased gripping surface and comfort

free shipping

Check price

IRWIN Step Drill Bit Set, 3-Piece (10502CB)

Drill bits feature a radial concave flute

free shipping

Check price

NUTTDOO 3pcs HSS Step Drill Bit Set, 4-12mm, 4-20mm, 4-32mm for DIY Plastic Wood Metal

3 SIZES DRILL BITS SET INCLUDES 5 steps 4-12mm (4mm, 6mm, 8mm, 10mm, 12mm); 9 steps 4-20mm (4mm, 6mm, 8mm, 10mm, 12mm, 14mm, 16mm, 18mm, 20mm); 15 steps 4-32mm (4mm, 6mm, 8mm, 10mm, 12mm, 14mm, 16mm, 18mm, 20mm, 22mm, 24mm, 26mm, 28mm, 30mm, 32mm)

Check price

Large Step Drill Bit, CYLBAQ HSS Spiral Step Drill Bits For Metal,Titanium High Speed Steel 6-60MM Step Cone Cutter Multiple Hole Drilling Cone Drill Bit Stepped Up Bits For DIY Lovers

Material HSS 4241 High hardness Material Titanium, rustproof.

free shipping

Check price

toolant Four Spiral Flute Cobalt Step Drill Bit(Pro Max), 4-32mm Impact Ready Four Spiral Flutes Unibit Step Bit, 1/4" Hex Shank Unibit for Metal, Stainless Steel, Aluminum, Wood, Plastic

WARRANTY - If you are not fully satisfied for any reason, please contact us for 100% refund or replacement. If the hex shank snap off, please contact us for replacement.

free shipping

Check price

Spiral Grooved Step Drill Bit Set, High Speed Steel Titanium Coated, 4mm to 12/20/32 mm (5/32" to 5/4") Hex Shank Metric, HSS Cut Tool Set for DIY Plastic Wood Metal Aluminum Copper

Application Suitable for sheet metal, sink, car repair, etc. Widely used to cut holes in a variety of material like plate, aluminum, insulation board, PVC board, the thickness of wood within 5mm.

~~£ 11.99~~

Check price

HSS Spiral Step Cone Drill Bit, 6-60mm, Metal and Wood Hole Cutter Tool

STEP INCREMENTS Progressive diameter increases allow for multiple hole sizes with a single tool, saving time and storage space

Check price

6 Pcs Titanium Coated Drill Bit Set, Including 3 Sizes of Step and Twist Drill Bits for Metalworking, Woodworking, Hole Drilling

Multi-Purpose Great tools for drilling holes in soft metal, wood, plastic, etc.

~~£ 9.99~~

Check price

The best step drill bits in comparison

Guaranteed independent and reliable

Features

Features

Features

Features

Features

Features

Features

Features

Features

Features

You might also be interested in these step drill bits.

Our offer