10 Best Step Drill Bits
#1 Best Pick
STROTON Metric 5% Cobalt Step Drill Bits for Stainless Steel and Hard Metal (4-32mm/15 Steps)
Brand: STROTON
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- Premium M35 5% Cobalt Steel ,66-69 HRC (Rockwell Hardness Scale) ,Usually Give the Best Heat,Wear and Chip Resistance and Long Tool Life.
- 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.
- 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.
- [4-32mm] 15 Steps (4mm,6mm,8mm,10mm,12mm,14mm,16mm,18mm,20mm,22mm,24mm,26mm,28mm,30mm,32mm)
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#2 Best Value
Neiko 10182A Titanium Step Drill Bit Set, High Speed Steel | 1/8” to 1/2” Total 13 Step Sizes
Brand: Neiko
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- HIGH-QUALITY DRILL BIT: Our Titanium Drill Bit is made with #4241 high-speed alloy steel and has a titanium nitride coating for extra durability. The 2-flute design makes this bit a fast and long-lasting metal cutting tool.
- VERSATILE DRILL BIT: This multifunctional spiral drill bit fits securely in most pistol drills, drill presses, or other hand power tools. Use this versatile small cone-shaped drill bit for metal and wood projects at work or home.
- DRILL BIT FOR HARDENED STEEL: Use this steel drill bit for drilling steel, wood, and other thick metal. It has a 135-degree split-point tip and features a 2-fluted spiral design that automatically deburrs and expands holes for a cleaner drilling process.
- MULTISIZE DRILL BIT: This hole drill bit can drill holes in 13 different sizes: 1/8", 5/32", 3/16", 7/32", 1/4", 9/32", 5/16", 11/32", 3/8", 13/32", 7/16", 15/32", and 1/2".
- HEAVY-DUTY DRILL BIT: Our multifunction drill bit is created to work with any project, large or small. You can use it to drill new holes or enlarge existing ones without having to change drill bits. Get your work done with confidence and speed!
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#3 Budget Pick
Mengshen Co Step Drill Bit 4-32mm Spiral Groove, M35 HSS Multi Hole Cutting Enlarge Stainless Steel Plate Quenching Steel Plate Metal Sheet Counterbore Drilling Triangle Handle Drill Bit Set
Brand: Mengshen
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- Much More hardness - M35 HSS is harder lot than HSS 4241, suit for drilling in stainless steel plate & quenching steel plate , iron plate, aluminum, wood.
- Good Design - Triangle shank fits into power tools chuck securely and eliminates slip; two-flute design clears chips faster and allows particles to escape easily.
- Split point tip increases speed. It can automatically deburr holes while drilling to keep the drill bit clean.
- One step drill bit meets all your requirements, 4-32mm M35 HSS step drill bit with 15 steps sizes - 4mm, 6mm, 8mm, 10mm, 12mm, 14mm, 16mm, 18mm, 20mm, 22mm, 24mm, 26mm, 28mm, 30mm, 32mm
- You can use water to cooling it when it is work and it can be used for even longer.
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#4 Top Choice
Meichoon HSS Step Drill Bit Set 3Pcs Titanium Coated 4-12mm/4-20mm/4-32mm, Hex Shank Pagoda Drill for Carbon Steel, Sheet Iron, Insulation Boards, PVC Boards and Wood DC08
Brand: Meichoon
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- HSS & Titanium Coating - High speed steel makes it last longer than others, titanium coating ensures easily cut through steel sheets, aluminum sheets, copper & plastic & wood board and many other types of sheet metal with ease.
- Good Design - Hex Shank fits into power tools chuck securely and eliminates slip; two-flute design clears chips faster and allows particles to escape easily.
- It can automatically deburr holes while drilling to keep the drill bit clean.
- Split point tip increases speed.
- A necessity for family or handyman or professionals - Perfect for home repairs and light jobs such as drilling holes in plastic, aluminum, copper and many other types of sheet metal.
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#5 Popular Choice
Aufondof 4Pcs/Set Titanium Coated Step Drill Bit Set, HSS Hex Shank Metal Multiple Hole Step Drill Bit Kit / 3-12mm 4-12mm 4-20mm with Blue Nylon Storage Pouch for DIY Woodworking, Metal, Plastic
Brand: Aufondof
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- Quality Materials: Forged from titanium coated high speed steel, fully polished, drop forged and heat treated, strong and durable. Comes with 3-Piece HSS Groove Step Drill Bit (3-12/ 4-12/ 4-20mm ). HSS Hex Shank Step Drill Bit Kit are suitable for all kinds of for home DIY power drills.
- Hex shank: Most drills or drills with 6.35 mm (1/4 ") mandrel are 6.35 mm hexagon shanks, which can be firmly installed in machine tools and eliminate slippage.
- Two-channel spiral groove design: can achieve faster, more stable and smoother cutting. You can automatically chamfer holes to clean the drill.
- Easy Drilling: Two-Flute Design for smoother cutting. High Step design let you feel the stop and never drill bigger in mistake.
- Multi Purpose: This titanium coated step drill bit set is suitable for drilling of thinner stainless steel, bass,wood,plastic,carbon steel, aluminium plate, iron plate,PVC,fiberglass and other materials.Easy to carry with a nylon pouch, convenient to storage in bag, car, or at home. Perfect for professional and home use.
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#6 Top Pick
6Pcs HSS Titanium Coated Drill Bit Set with Case, 3 Step Drill Bits + 3 Serrated Drill Bits for Metalworking, Woodworking, Hole Drilling, Multiple Hole Stepped Up Bits for DIY Lovers
Brand: Koycbiao
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- A necessity for family or handyman or professionals - Perfect for home repairs and light jobs such as drilling holes in plastic, aluminum, copper and many other types of sheet metal.
- Package Included: 6 Pcs Drill Bit Set: Including 3 pcs step drill bits (one 5-Step Drill Bit from 4mm to 12mm, one 9-Step Drill Bit from 4mm to 20mm and one 15-Step Drill Bit from 4mm to 32mm), 3 pcs twist drill bits (3mm, 6mm, 8mm).
- Sharp & Wear-Resistant: These drill bits are made of high speed steel with titanium coating for proven capability and durability.
- Precise & Efficient --- Combining the multi-grid drilling of the pagoda bit and the sharp edge of the serrated bit to facilitate the removal of cutting waste when drilling, preventing iron chips or sawdust from scattering, makes drilling cutting faster
- High Speed Steel - Suitable for below 25 hardness of the work piece, such as carbon steel, sheet iron, insulation boards, PVC boards, planks, and wood thickness below 5MM.
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#7 Top Pick
Mengshen HSS Step Drill Bit Spiral Flute 3-Piece Set 4-12mm/4-20mm/4-32mm, HSS Titanium Coated Drilling Tool Multi-Functional Hex Shank High Speed Steel with Storage Bag
Brand: Mengshen
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- HSS & Titanium Coating - High speed steel makes it last longer than others, titanium coating ensures easily cut through steel sheets, aluminum sheets, copper & plastic & wood board and many other types of sheet metal with ease.
- Good Design - Hex Shank fits into power tools chuck securely and eliminates slip; two-flute design clears chips faster and allows particles to escape easily.
- It can automatically deburr holes while drilling to keep the drill bit clean.
- Split point tip increases speed.
- A necessity for family or handyman or professionals - Perfect for home repairs and light jobs such as drilling holes in plastic, aluminum, copper and many other types of sheet metal.
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#8 Top Pick
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
Brand: Neiko
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- 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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#9 Top Pick
TOOLMAYS M35 Cobalt Hss Step Drill Bit, Altin-Coated Stepped Drill Bit Ø 4-32 mm,15 Steps Cone Drill Bit for Stainless Steel, Metal, Wood and Plastic
Brand: TOOLMAYS
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- TiAIN Coating for Enhanced Performance: Featuring an industrial-grade TiAIN coating with exceptional hardness, these step drill bits deliver extended service life, higher processing speeds, and improved heat resistance. The coating also offers superior wear and corrosion resistance, strong adhesion, and reduced friction for smoother operation.
- Premium M35 Steel Construction: Crafted from high-speed M35 steel, these bits effortlessly drill through a variety of materials—including stainless steel up to 3mm thick, and iron, aluminum, and other metals up to 5mm thick. The optimized conical design and deep double-flute helix ensure efficient chip removal and stable performance.
- Comprehensive Size Range – Grade 15 (Ø4-32mm): This set includes diameters ranging from 4mm to 32mm in 2mm increments (4, 6, 8, 10… 32mm), making it ideal for pre-drilling, drilling, deburring, and other everyday metalworking tasks.
- 10mm Drill Bit with Universal Shank: Specifically engineered for compatibility with cordless screwdrivers, drill guns, and bench drills, this 10mm bit features a 24mm shank length and a minimum torque capacity of 1100 Nm, offering both versatility and power in demanding applications.
- Usage Tips: For best results, use cutting oil during initial operation to facilitate easier starts and reduce friction. Since drill bits are subject to wear, inspect them regularly and replace when significant wear occurs to maintain drilling precision and safety.
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#10 Top Pick
Neiko 10193A Titanium Coated Step Drill Bit Set, 28 Sizes, High Speed Steel, Standard (SAE), 1 Count
Brand: Neiko
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- REPLACES 28 DRILL BITS: This set includes three standard SAE step drill bits that replace 28 individual drill bits allowing for you to spend more time working, than swapping out drill bits.
- TITANIUM COATED HSS UNIBIT: Made of high-speed steel with titanium coating for added durability and bit life. Suitable to drill though plastic, aluminum, copper, stainless steel, and many other types of sheet metal.
- SMOOTH DRILLING ACTION: Two-flute spiral design provides faster, smoother cutting without walking and a tri-flat shank to ensure a firm grip. Our titanium 2 step bits for metal are perfect for all your DIY, general building, and engineering tasks.
- COMPLETE STEP DRILL BIT SET: Comes with one 3/16-inch to 1/2-inch six-step bit, 1/4-inch to 3/4-inch nine-step bit, and 1/8-inch to 1/2-inch 13-step bit
- STEP BIT SET CUTS AND DEBURRS: Cuts through steel, sheet metal and other surfaces with only a small amount of pressure and deburrs as you drill. Our unibit step drill bit is compatible with most drills on the market.
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