Top 10 Best step drill bits in 2026

Last Updated - 6/6/2026

🏆Best Choice

IRONANT

IRONANT Step Drill Bits, 5PCS HSS Titanium Step Drill Bit Set, 50 Sizes High Speed Steel Step Bits for Metal with Aluminum Case

9.8

ChoiceComparer.com Score

9.8

/ 10

Outstanding

Main highlights

•HSS Titanium Coating: The step drill has excellent sharpness and durability due to its high speed steel material and titanium coating
•118° Split Point Tip & Dual-flute Design: increases cutting speed with self-centering and prevents walking, clears chips faster and allows particles to escape easily
•50 Sizes in 5 Pcs: The step drill bit kit includes 5 standard pieces with totally 50 sizes for versatility, enough for your DIY needs
•Widely Application: Ideal for drilling holes in plastic, aluminum, iron and many other types of sheet metal (Not recommended for stainless steel & wood)
•Equipped with a well-organized case, make it more convenient for using and storing the step drills

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$21.98

$32.99

-33%

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ZELCAN

ZELCAN 10 Sizes Titanium Step Drill Bit, 1/4 to 1-3/8 Inches High Speed Steel Drill Cone Bits for Sheet Metal Hole Drilling Cutting, HSS Multi Size Hole Stepped Up Unibit for DIY Lovers Electrician

9.7

ChoiceComparer.com Score

9.7

/ 10

Outstanding

Main highlights

•Durable HSS Drill Bit ----- High-speed steel makes it last longer than others, titanium coating ensure easily cut through iron sheets, aluminum sheets, copper & plastic & wood board and many other types of sheet metal with ease, and it can automatically deburr holes while drilling to keep the drill bit clean.
•Titanium Coating ----- Coated with titanium, this step drill set performs well in heat, corrosion and rust resistance.
•Revolutionary Design ----- Tri-flatted shank fits into power tools chuck securely and eliminates slip; two-flute design clears chips faster and allows particles to escape easily.
•Includes 10 Step Sizes ----- 1/4", 3/8", 1/2", 5/8", 3/4", 7/8", 1", 1-1/8", 1-1/4", 1-3/8".
•A Must-Have for Handyman or Professionals ----- Perfect for home repairs and light jobs such as drilling holes in plastic, aluminum, copper, iron and many other types of sheet metal (excluding steel or any other harder metal).

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$9.99

$10.99

-9%

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NEIKO

NEIKO 10181A Step Drill Bit Set, 3 Piece, Spiral Grooved for Faster Drilling, Step Bits for Stainless Steel, Metal, Wood, Plastic, Unibit Cone Drill Bits with 31 Step Sizes Total

9.5

ChoiceComparer.com Score

9.5

/ 10

Outstanding

Main highlights

•PREMIUM STEP BIT: Each unibit is constructed of industrial high-speed steel with a titanium nitride coating for durability and strength to punch and drill clean holes in materials like plastic, aluminum, wood, copper, stainless steel, and other types of sheet metal.
•STEP DRILL BIT FOR METAL: With a split point tip that accelerates cutting speed while preventing angled walking away from center line of bore, drilling holes in metal is fast, efficient, and clean.
•SPIRAL DESIGN: The two-flute spiral grooved design deburrs chip, dust and debris for clearance and smooth cutting. With 31 step sizes, each hole made with these step bits will be precise.
•QUICK-CHANGE: The 1/4-inch hex shank makes for easy, convenient, and quick stepper bit switches and is compatible with impact ready power tools.
•INCLUDES: Each bit set comes with 3 drill bits of a combined 31 sizes to add to your drilling arsenal: 13 step drill (1/8, 5/32, 3/16, 7/32, 1/4, 9/32, 5/16, 11/32, 3/8, 13/32, 7/16, 15/32, 1/2-inch) 6 step drill (3/16, 1/4, 5/16, 3/8, 7/16, 1/2-inch) and 12 step drill (3/16, 1/4, 5/16, 3/8, 7/16, 1/2, 9/16, 5/8, 11/16, 3/4, 13/16, 7/8-inch).

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$16.99

$17.99

-6%

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ZELCAN

ZELCAN Step Drill Bit Set, 5PCS Four Spiral Flute Step Bits for Metal, 50 Sizes Titanium-Coated HSS Drill Bits with 1/4" Hex Shank for Stainless Steel Aluminum Wood Plastic

9.4

ChoiceComparer.com Score

9.4

/ 10

Excellent

Main highlights

•Handle Drilling Tasks with Ease: With four sharp cutting blades, ZELCAN's step drill bit set ensures swift, smooth drilling, effortlessly cutting through steel, aluminum, copper, and other tough materials like a hot knife through butter!
•Titanium-Coated HSS Build: Crafted from robust high-speed steel with a titanium coating, our drill bits ensure superior hardness for faster cutting through harder materials while withstanding high temperatures and cutting forces, ensuring lasting performance.
•50 Sizes Comprehensive Drill Bit Set: Our 5-piece step bit set caters to diverse drilling needs, with diameters ranging from 3/16" to 1/2" (6 steps), 1/8" to 1/2" (13 steps), 1/4" to 3/4" (9 steps), 3/16" to 7/8" (12 steps), and 1/4" to 1-3/8" (10 steps).
•Quick Release & Tapered Edge Design: The 1/4" hex shank and quick-release slot ensure secure connections and easy changes. The four-spiral flute design effectively evacuates chips from the hole, reducing the likelihood of clogging and improving drilling efficiency.
•Easy Organization & Identification: Our step drill bits for metal come with a handy storage case, ensuring effortless organization and portability for all your drilling tasks. Clear size markings on each bit allow for quick identification.

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$32.99

$35.99

-8%

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Aleric

Aleric Step Drill Bit Set - Titanium Coated, High Speed Steel Drill Cone Bits for Aluminum, Wood and Plastic Hole Drilling Cutting, Multi Size Hole Stepped Up Unibit for DIY Lovers,3pcs

9.2

ChoiceComparer.com Score

9.2

/ 10

Excellent

Main highlights

•【QUILITY STEP DRILL BITS】 The step drill bits are made of classic high speed steel with titanium coating for proven capability and durability in drilling holes in plastic, aluminum, wood board, copper, stainless steel ect.
•【DOUBLE CUTTING BLADES DESIGN】The high speed steel step drill bit set is designed with double cutting blades, which provides faster, smoother and accurate drilling.
•【TRI-FLATTED SHANK】 Each unibit step drill bit optimally fits into power tools such as impact drill chucks securely and eliminates slip for higher efficiency of output.
•【WELL PERFORMED 】 The multiple hole drill bit set include 28 size, which can cuts through steel, aluminum , wood board and other surfaces creating relatively clean holes as you drill. Suitable for home DIY, and general building/ engineering use.t slippage and shedding during the rotation.
•【SET INCLUDES】The cone drill bits set includes 3 common sizes for versatility. Bit #1 (6 steps): 3/16", 1/4", 5/16", 3/8", 7/16", 1/2"; Bit #2 (13 steps): 1/8", 5/32", 3/16", 7/32", 1/4", 9/32", 5/16", 11/32", 3/8", 13/32", 7/16", 15/32", 1/2"; Bit #3 (9 steps): 1/4", 5/16", 3/8", 7/16", 1/2", 9/16", 5/8", 11/16", 3/4". If you are not fully satisfied with the step bit for any reason, please contact us for 100% refund or replacement.

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$6.99

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COMOWARE

COMOWARE Step Drill Bit Set 5-Piece Titanium-Coated with Automatic Center Punch - Short Length, Double Cutting Blades, High-Speed Steel - Covering 50 Sizes, Complete with Aluminum Case

9.1

ChoiceComparer.com Score

9.1

/ 10

Excellent

Main highlights

•HSS step drill with Titanium Coating – High-speed steel material ensures a longer service life.This unibit step drill bit features advanced heat/corrosion/rust resistant coating, specially engineered for demanding metal drilling applications.
•Multi-Material Performance – This step drill bit set effortlessly drills through steel sheets, aluminum, wood, and plastic with clean holes. The step bits are perfect for DIY home projects and professional building/engineering applications.
•Two Straight Flutes stepped drill bit - The dual-flute design ensures faster chip removal and cleaner holes. This step drill bits for metal provides smoother cutting while efficiently evacuating chips for peak drilling performance.
•Tri-Flatted Shank Step Bit Set - These professional step drill bits feature 3 precision-flatted shanks for maximum grip, eliminating slippage under high torque. The enhanced design ensures secure clamping in pistol drills.
•Set Includes - This metal step drill bit includes 5 common sizes for versatility, drills 28 sizes (3/16" to 1-3/8") —laser-etched markings on the unibit allow instant size identification for precision metalworking.

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$18.69

$21.99

-15%

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COMOWARE

COMOWARE Step Drill Bit for Metal, Titanium Coated, Double Cutting Blades, High Speed Steel, Short Length Drill Bit, Total 10 Sizes from 1/4” to 1-3/8", for Steel Sheets Aluminum Copper Plastic Wood

8.9

ChoiceComparer.com Score

8.9

/ 10

Great

Main highlights

•HSS Titanium Coating - High speed steel along with titanium coating ensures outstanding durability and sharpness, can reduces the friction, runs cooler.
•Meet Your Demands - With the step drill bits we offered, you can process different kinds of diameter holes, which greatly saves you a lot of trouble.Great for steel sheets/ aluminum sheets/ copper/ plastic/ wood board and many other types of sheet metal with ease countersunk. Suitable for Home DIY, and General Building/ Engineering Use.
•Design - The split point tip is at 118 degrees to increase the wear resistance. The two flute design provides a smoother cutting, allows the material particles escape easily for a much more clean drilling operation.
•Safety and Stability- The 3 flat shank is better clamped on the pistol drill to prevent slippage and shedding during the rotation.
•Size Includes - One drill with 10 steps: 1/4", 3/8", 1/2", 5/8", 3/4", 7/8", 1", 1-1/8", 1-1/4", 1-3/8" can fit the majority of brands currently on the market.

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$8.49

$9.99

-15%

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Aleric

Aleric Step Drill Bit Set - 5 Pcs High Speed Steel Titanium Step Drill Bits, Step Bits for Metal,Wood,Plastic, Step Bit, Multiple Size Hole Cutting Drilling Cone Unibit Step Drill Bit for DIY Lovers

8.8

ChoiceComparer.com Score

8.8

/ 10

Great

Main highlights

•High Speed Steel Titanium Coating - Our step drill bit is adopted with high speed steelmaterial and titanium coating, which makes the step bit harder, also the step drill has excellent sharpness and durability.
•Great Dual-flute Design - The step drill bits are designed with 118° split point tip, which can improve the cutting speed while increasing the wear resistance, also the unibit step drill bit can be used for a long time. The two flute design provides a smoother cutting, and allows chips to be removed quickly. This stepped drill bit will be a great tool for DIY Lovers.
•Widely Application - The step drill bit for metal can be used for drilling holes on plastic, aluminum alloy, iron, wood and many other types of sheet metal. It is better to add coolant or water when drilling. The step drill is great for home DIY or engineering use. (Not recommended for stainless steel)
•Multiple Size Step Bit - The step drill bit set including 5 standard step bits, which you can drill 50 different kinds of diameter hole, which can meet your daily needs. Please mark the spot that you are to drill for easier drilling and improved drill bits life. Each step bits for metal optimally fits into power tools such as impact drill chucks securely and eliminates slip for higher efficiency of output.
•100% Good After-Sale Service - All the cone drill bit come in a well organized case, which make it more convenient for using and storing the unibit. Also we are confident with the quality of step drill bit, please feel free to contact us if you have any comment about the stepper bit, we will give you a satisfactory answer!

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$9.87

$12.99

-24%

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ss shovan

3PCS Unibit Step Drill Bit Set (1/4"-7/8"), M35 Cobalt, TiAlN Coated for Superior Durability, Spiral Cone Drill for Stainless Steel, Sheet Metal, Aluminum & Plastic

8.6

ChoiceComparer.com Score

8.6

/ 10

Good

Main highlights

•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).
•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, plastic, and more. Not only can it enlarge holes, but it also deburrs, chamfers, and cutting.
•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.
•118°X TYPE OPENINGS DESIGN - Designed with a spiral flute for smooth, clean drilling and enhanced chip removal. Achieve precise holes effortlessly, reducing the need for multiple drill bits.
•COMPATIBLE WITH VARIOUS DRILLS - 1/4"(6.35mm) Hex shank design eliminate slipping in drill chuck, these step drill bit for metal are compatible with a range of drilling tools including bench drills press, impact drills, and hand drills, making them a versatile addition to your toolkit.
•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.

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$32.99

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Hendar

Titanium Coated HSS Step Drill Bit – 10 Sizes (1/4" to 1-3/8") | High-Speed Steel Unibit for Metal & Plastic Sheet Drilling

8.5

ChoiceComparer.com Score

8.5

/ 10

Good

Main highlights

•HSS Titanium Coating : Made from high-speed steel with a titanium coating for excellent sharpness, durability, and longer tool life
•Dual-Flute Design : Clears chips quickly and allows easy particle escape for efficient drilling
•118° Split Point Tip : Self centering tip increases cutting speed
•Wide Application : Ideal for drilling plastic, wood,aluminum, iron, and sheet metal (not suitable for stainless stee)
•Multiple Sizes: 10 sizes from 1/4 to 1-3/8 Inches

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$8.99

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