Matework M35 Cobalt Step Drill Bit Set, Four Spiral Flute Step Bit (1/8"-7/8") Wear-Resistant TiAlN Coated, 1/4" Hex Shank Unibit for Metal, Wood, Stainless Steel, Plastic (3Pcs, 20 Size)
Matework M35 Cobalt Step Drill Bit Set, Four Spiral Flute Step Bit (1/8"-7/8") Wear-Resistant TiAlN Coated, 1/4" Hex Shank Unibit for Metal, Wood, Stainless Steel, Plastic (3Pcs, 20 Size)
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Matework M35 Cobalt Step Drill Bit Set, Four Spiral Flute Step Bit (1/8"-7/8") Wear-Resistant TiAlN Coated, 1/4" Hex Shank Unibit for Metal, Wood, Stainless Steel, Plastic (3Pcs, 20 Size)

4.3 stars out of 15 reviews
(4.3)|
15 ratings

Key item features

  • Enhanced Stability: The four flute step drill bit design reduces deflection during cutting, providing greater stability and improved accuracy.
  • Durable Material: Made from M35 cobalt high-speed steel (HSS), offering high hardness (HRC 64-66), red hardness, and wear resistance for tough jobs.
  • Advanced Coating: TiAlN coating provides exceptional hardness, high oxidation temperature resistance, and excellent thermal hardness, making it ideal for demanding applications.
  • Efficient Drilling: The 135-degree cutting angle reduces self-wear and provides a larger stress area, resulting in cleaner and more efficient drilling.
  • Versatile Use: Suitable for drilling metal, wood, stainless steel, and plastic, making it a versatile tool for various materials.
  • Maintenance Tips: To maintain optimal performance, add cutting oil or spray water to cool during continuous use, and note that start-up speed may be slower due to the larger cutting angle.
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4.591739475774424 stars out of 5, based on 1262 seller reviews(4.6)
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4.3 out of 5 stars
stars15 ratings10 reviews
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Showing 1-3 of 10 reviews

Feb 3, 2026
michael
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Count per pack: 3
Sold byzhongruiheze Co. LtdDelivered byWalmart
5 out of 5 stars review

Verified Purchase

Good quality

I haven't used the bits yet but they have good sharp edges. edges are clean as well. I'm planning on using these do make holes for trailer lights. so I'll have plenty of 3/4" holes to drill

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Helpful?35SCWZ0SWDW21286200073
Aug 24, 2025
BILL
Top Reviewer
Item details
Count per pack: 3
Sold byzhongruiheze Co. LtdDelivered byWalmart
5 out of 5 stars review

Verified Purchase

They worked very well

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Helpful?35SCWZ0SWDW21286200073
Sep 25, 2024
Russell
Top Reviewer
Item details
Count per pack: 3
Sold byzhongruiheze Co. LtdDelivered byWalmart
5 out of 5 stars review

Verified Purchase

great bits

As an electrician i have went through many step bits of all kinds of manufactures. Best ones in 20 years. Try them out. You will not be disappointed.

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Helpful?35SCWZ0SWDW21286200073