Best Step Drill Bits Deals of Nov 2026

Updated November 10, 2026Our site contains affiliate links for which we may be compensated.
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Step Drill Bit Set - 5PCS Titanium HSS Step Bit with Two Spiral Flutes | 50 Sizes 4241 Drill Set from 1/16" to 1-3/8" for Metal, Aluminum, Wood & Plastic, Unibit for Electricians & DIY

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.
118° Split Point Tip & Spiral Dual-flute Design: increases cutting speed with self-centering and prevents walking, clears chips faster and allows particles to escape more 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 or any other harder metal).
Two Spiral 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.
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IRONANT 5-Piece HSS Step Drill Bit Set for Metal, 50 Sizes, TiAlN Coated | TITANIUM-Coated HSS Bits with 50 Hole Sizes for Sheet Metal, Aluminum, Iron and Plastic, Packed in an Aluminum Case

GET CLEAN HOLES ACROSS COMMON PROJECT MATERIALS: Tackle plastic, aluminum, iron and various types of sheet metal with one versatile set, so you can move between everyday DIY and general drilling jobs without searching for a different bit collection. Not recommended for stainless steel or wood.
STAY SHARP THROUGH REPEATED USE: High-speed steel construction with a titanium coating provides reliable sharpness, wear resistance and long-lasting durability, helping you complete more drilling work with consistent performance.
START HOLES WHERE YOU WANT THEM: The 118° split-point tip helps the bit self-center and reduces walking, making it easier to begin accurate holes. The dual-flute design cuts quickly and clears chips efficiently for a smoother drilling process.
DRILL MORE HOLE SIZES WITH FEWER BIT CHANGES: Five standard step drill bits cover a total of 50 hole sizes, giving you the flexibility to handle a wide range of DIY and general drilling projects with fewer individual bits to manage.
KEEP THE RIGHT BIT READY WHEN YOU NEED IT: The organized carrying case holds each step drill bit securely and makes sizes easy to find, helping prevent clutter while simplifying storage and transport between projects.
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$21 Savings

EZARC M35 Cobalt Step Drill Bit Set, 3PCS 1/8"-7/8", 1/4" Hex Shank | AlTiN Coating,C-Profile Edge,Triple and Spiral Flute, for Metal, Stainless Steel, Aluminum,Plastic, Storage Case

【C-Profile Design】EZARC step drill bits feature a triple-flute design for increased stability, effectively reducing deviation during the cutting process. Additionally, the 'C-profile' cutting edge ensures smoother cutting and an increased cutting speed
【M35 HSS Step Drill】M35 cobalt high-speed steel, through heat treatment, achieves toughness and bending strength that surpass standard high-speed steel, making this step drill bit more suitable for cutting hard materials
【AlTiN Coating】Step bits coated with aluminum titanium nitride, rated at 89HRC for exceptional hardness and thermal properties. This coating offers superior resistance to heat, wear, and corrosion, with high adhesion and low friction
【3 Pcs Step Drill Bit Set】 The step drill bits are neatly organized in a compact case for easy transportation and storage. The spiral flutes and stepped design of the drill bits allow for seamless and efficient drilling through various thicknesses.
【Please Note】Material thickness: Suitable for metal sheet up to 1/8" (3 mm) thick and stainless steel sheet up to 1 mm thick. For continuous operation, add cutting oil or coolant before use. Due to the larger cutting angles, the startup speed may be slower
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Co-z

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

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"
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
Titanium Coating: Coated with titanium, this step drill set performs well in heat, corrosion and rust resistance
Durable HSS Drill Bit: Made of high-speed steel for long-lasting performance, this drill bit easily cuts through iron, aluminum, copper, plastic, wood, and other sheet metals. It also automatically deburrs holes while drilling to maintain a clean bit
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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AIMLENTOOL 5Pcs Step Drill Bit & 5Pcs Countersink Drill Bit Set | Titanium Coated, 50 Sizes for Metal with Aluminum Case, Multiple Hole Stepped Up Bits for DIY

Drill Bits Set: This unit step drill bit includes 5 step bit in sizes 3/16-1/2'', 1/8-1/2'', 1/4-3/4'', 3/16-7/8'', 1/4-1-3/8'', effectively replacing 50 sizes of conventional drill bits. Along with a center punch. Additionally, the counter sinker drill bit set in sizes1/4'', 3/8'', 1/2'', 5/8'', 3/4''.
Premium Quality: AIMLENTOOL drill bits are made of high speed steel for longer cutting edge life even at extreme temperatures. Step drill set with a titanium coating significantly improves durability and sharpness for less friction and cooler operation,performs well in heat, corrosion and rust resistance.
Craft Design: Counter sinker drill bit set very suitable for sinking 90° holes in wood and soft metal countersunk screws and fasteners. Step drill with 118° split tip and double groove design, increases cutting speed with self-centering and prevents walking, clears chips faster and allows particles to escape easily.
Widely Application: Our step drill bit with its powerful drilling capability, can process different diameter holes, and can be used on materials such as metal, iron, aluminum, brass, plastic, aluminum alloy, wood, plastic, etc. Suitable for a wide range of household projects.
Easy Storage and Organization: The drill bit kit is packaged in a sturdy and compact aluminum storage case with a foam layer inside, which can maintain the order and protection of the drill bit, reduce wear, and make it an important supplement to the toolbox.
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COMOWARE Step Drill Bit Set for Metal HSS 5Pcs Ti-Coated with Center Punch | Step Bit with 2 Flutes,Tri-Shank, Unibit from (3/16" to 1-3/8") 50 Sizes, for Steel/Wood/Plastic, with Aluminum Case

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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M2 Step Drill Bit Set, 1/8~1-3/8" 5Pcs 4 Spiral Flute AlTiN Coated Step Bit | Versatile Size,Upgraded 3/8" Shank for Higher Torque,1/4" Hex Shank,for Soft Metal, Sheet Iron, Aluminum, Wood, Plastic

Spiral Flute Step Drill Bit for Metal: Our step drill bit features an innovative spiral flute design, precision-machined to reduce walking and improve drilling stability. It delivers up to 3x faster drilling than conventional step bits with less vibration, helping create smooth, accurate holes in metal with professional results
M2 Cobalt Step Drill Bit: Made from premium M2 cobalt high-speed steel with heat treatment, this cobalt step drill bit offers excellent toughness, wear resistance, and bending strength compared with standard HSS. It is built for drilling stainless steel, mild steel, aluminum, plastic, and other materials
Upgraded 3/8" Shank for Higher Torque: Unlike standard 1/4" shank step bits, this 1/4"1-3/8" step drill bit is upgraded with a stronger 3/8" shank for a more secure grip and better torque resistance. The reinforced shank helps reduce slipping, twisting, and breakage under heavy drilling pressure, making it more durable for demanding metal work
AlTiN Coated Step Bit with 67HRC: The Aluminum Titanium Nitride coating provides up to 67HRC hardness, helping improve heat resistance, wear resistance, and corrosion protection. This tough coating extends tool life and maintains consistent drilling performance during repeated use
Versatile Size Step Drill Bit: This step drill bit covers 1/4" to 1-3/8" sizes in one tool, allowing you to drill multiple hole diameters without constantly changing bits. It is suitable for sheet metal, electrical boxes, metal plates, plastic panels, and general repair or installation work
Usage Notes: Use on mild steel up to 1/8" thick or stainless steel up to 1mm thick. Always apply cutting oil or coolant during continuous operation. Start at a slower speed for better control, then increase speed gradually. Avoid excessive feed pressure or forcing the bit when it gets stuck
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12% Off

5 Piece Unibit Step Drill Bit for Metal, HSS Step Bit Set, 1/8"-1-3/8" | Four Spiral Flute, Bright Ground & Nitrided Finish, 59 Sizes, 1/4" & 3/8" Hex Shank, for Metal, Wood, Plastic, Storage Case

Effortless Precision Drilling:Four spiral flute step drill bits deliver fast, smooth drilling. Advanced geometry slices through steel, aluminum, copper and metals like a hot knife through butter
Durable High-Speed Steel:Forged from premium HSS with Rockwell 62-65 hardness for lasting durability. Resists heat, wear and thermal fatigue while maintaining cutting performance under pressure
5 Pcs Step Drill bit:Covers 90% metalworking applications with graduated diameters: 3/16"-1/2" (6 steps), 1/4"-3/4" (9 steps), 3/16"-7/8" (12 steps), 1/8"-1/2" (13 steps), 3/16"-1-3/8" (19 steps)
Easy to Identify & Organize:Laser-etched size markings on every step bit provide quick identification for precise drilling. The storage case keeps bits organized and ready to take anywhere
Widely Application:Our metal step drill bits are ideal for drilling into metal sheets, stainless steel, aluminum, copper, plastic, and other thin materials
Quick-Change Design:Dual shank with a 1/4" hex and 3/8" round shank enables quick step-bit changes. Ensures a secure hold without slipping. Compatible with most handheld drills and drill presses
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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

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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Also available at
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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

【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 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 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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Our #1 Pick Today
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Step Drill Bit Set - 5PCS Titanium HSS Step Bit with Two Spiral Flutes | 50 Sizes 4241 Drill Set from 1/16" to 1-3/8" for Metal, Aluminum, Wood & Plastic, Unibit for Electricians & DIY

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.
118° Split Point Tip & Spiral Dual-flute Design: increases cutting speed with self-centering and prevents walking, clears chips faster and allows particles to escape more 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 or any other harder metal).
Two Spiral 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.
Check Price
on Amazon.com
Disclaimer: While we make every effort to ensure accuracy, we cannot guarantee that all product specifications, pricing, discounts, and details are complete or error-free. Because information is subject to change, we recommend verifying all details directly with the retailer prior to making a purchase. As an Amazon Associate, we earn from qualifying purchases.

10 Step Drill Bits deals are available from: Amazon, starting from $6.99.

The biggest discount we found is 12% on 5 Piece Unibit Step Drill Bit for Metal, HSS Step Bit Set, 1/8"-1-3/8" | Four Spiral Flute, Bright Ground & Nitrided Finish, 59 Sizes, 1/4" & 3/8" Hex Shank, for Metal, Wood, Plastic, Storage Case (BS2225) at Amazon.

The lowest price we found is $6.99 while the highest is $53.97. Prices for the best Step Drill Bits deals average at $24.03.