Top rated step drill bits

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AI-generated summary · updated July 27, 2026 · verify details before purchase.

1 Best overall
IRWIN Unibit Step Drill Bit, 3/16-Inch to 1/2-Inch, 1/4-Inch Shank (10223)

4.7/5 $15-$25

High-quality coated M2 steel, precise steps, durable for thin materials like metal and plastic.
- Sharp cutting edges
- Smooth burr-free holes
- Long-lasting coating
- Not ideal for thick steel
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2 Best value set
DEWALT Step Drill Bit Set, 3-Piece (DW1361)

4.6/5 $30-$40

Three sizes cover 1/8 to 1/2 inch, titanium nitride coating, indexed for easy step identification.
- Versatile size range
- Reduced walking with pilot tip
- Rugged storage case
- Some users report chipping over time
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3 Best for professionals
Makita Step Drill Bit, 1/4-Inch Shank, 5-Piece Set (D-78505)

4.5/5 $40-$55

Cobalt M35 steel, heat-treated for extreme durability, works well on stainless steel.
- Excellent heat resistance
- Cuts through stainless steel
- Precise step increments
- Higher price point
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4 Best for metal panels
Milwaukee Step Drill Bit, 1/4-Inch Shank, 3/16-Inch to 7/8-Inch (48-89-8005)

4.6/5 $20-$30

3-flute design for faster cutting, split point tip prevents walking, ideal for automotive and HVAC.
- Fast chip removal
- Anti-walking tip
- Fits standard drill chucks
- Limited to thin materials
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5 Best budget pick
BOSCH Step Drill Bit, 1/4-Inch Shank, 3/16-Inch to 1/2-Inch (1902-1B)

4.4/5 $12-$18

Affordable yet durable M2 HSS bit, double-flute design reduces vibration, good for DIY projects.
- Low price
- Smooth cutting action
- Easy to sharpen
- Coating wears faster
- Not for heavy use
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6 Best entry-level
Neiko 10193A Titanium Step Drill Bit Set, 3-Piece

4.3/5 $10-$15

Budget-friendly set with titanium coating, covers 1/8 to 1/2 inch, good for occasional use.
- Very affordable
- Good for soft metals and wood
- Compact storage
- Less durable
- May overheat on thick material
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7 Best for electrical work
Klein Tools Step Drill Bit, 1/4-Inch Shank, 3/16-Inch to 7/8-Inch (32625)

4.5/5 $25-$35

Designed for metal conduit and boxes, single flute for clean holes, sharpens easily.
- Clean holes in electrical boxes
- Non-slip shank
- Laser-etched markings
- Single flute slower on thick material
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8 Best variety pack
WEN 5-Piece Titanium Step Drill Bit Set (WA1165)

4.2/5 $15-$20

Five sizes from 1/8 to 3/4 inch, titanium coating, index case, decent for home workshops.
- Large size range
- Comes in case
- Good value per bit
- Coating chips off with heavy use
- Not for professional daily use
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Buying advice

When choosing step drill bits, consider the material you'll cut most often. For thin metals (up to 1/8 inch), standard HSS with titanium coating works fine. For thicker or harder metals like stainless, choose cobalt bits. Look for split-point tips to prevent walking and a 3-flute design for faster cutting. A set offers versatility, but a single high-quality bit may be better if you need only one size range.

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