Cobalt Drill Bit Set for Metal and Hardened Steel, 13Pcs M35 HSS Twist Jobber Metal Drill Bits 1/16"-1/4", with Index Storage Box
Cobalt Drill Bit Set for Metal and Hardened Steel, 13Pcs M35 HSS Twist Jobber Metal Drill Bits 1/16"-1/4", with Index Storage Box
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Sinyeenglon

Cobalt Drill Bit Set for Metal and Hardened Steel, 13Pcs M35 HSS Twist Jobber Metal Drill Bits 1/16"-1/4", with Index Storage Box

Cobalt Drill Bit Set for Metal and Hardened Steel, 13Pcs M35 HSS Twist Jobber Metal Drill Bits 1/16"-1/4", with Index Storage Box13 piece cobalt drill bit set M35 high speed steel torsion drill bit suitable for hardened metal99 piece cobalt drill bit set M35 high speed steel torsion drill bit suitable for hardened metal21 piece cobalt drill bit set M35 high speed steel torsion drill bit suitable for hardened metal29 piece cobalt drill bit set M35 high speed steel torsion drill bit suitable for hardened metal9 16 Cobalt Drill Bit for Metal and Hardened Steel 1 2 Inch Reduced Shank M35 HSS Twist Heavy Duty Drill Bits with Index Storage Case5 8 Cobalt Drill Bit for Metal and Hardened Steel 1 2 Inch Reduced Shank M35 HSS Twist Heavy Duty Drill Bit with Index Storage Case
Model:13PCS(1/16-1/4)

Key item features

  • Premium Cobalt: M35 Cobalt 5% material offers superior hardness (up to 67) and extended lifespan, outperforming average HSS titanium coated bits by up to 12 times.
  • Enhanced Durability: Hardened full grinding process increases wear resistance, making the bits sharp and durable for various hard metals.
  • Precision Design: Features a 135-degree split point, gold oxide finish, and round straight shanks to prevent walking and efficiently clear chips.
  • Versatile Application: Ideal for cutting through hardened materials like stainless steel, cast iron, and titanium alloy, as well as softer materials.
  • Optimal Usage: Recommended for vertical drilling at low speeds (200-1000 rpm) with cutting fluid to prolong bit life.
  • Comprehensive Sizing: Includes 13 drill bits ranging from 1/16" to 1/4" to meet diverse drilling requirements.
  • Professional Tool: M35 Cobalt HSS is particularly suited for professionals working with challenging materials, ensuring long-lasting sharpness.
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Arrives by Sat, Jun 27
Sold by Premium Drill ToolPro Seller
Fulfilled by Walmart
5 stars out of 5, based on 1 seller review(5.0)
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4.6 out of 5 stars
stars42 ratings9 reviews
How item rating is calculated
  1. 5 stars81% (34)
  2. 4 stars5% (2)
  3. 3 stars12% (5)
  4. 2 stars0% (0)
  5. 1 star2% (1)
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Showing 1-3 of 9 reviews

Jun 2, 2026
George
Item details
Model: 99PCS(1/16-3/8)
5 out of 5 stars review

Verified Purchase

Strong material. Drills clean.

Review for: Sinyeenglon Cobalt Drill Bit Set for Hardened Metal and Stainless Steel, 99Pcs M35 HSS Twist Jobber Metal Drill Bits 1/16"-3/8". Arrived quickly in excellent condition exactly as described at a nice price. Storage carton is heavy plastic with actual mechanical hinges and a metal clasp closure. The case has compartments with clearly marked sizes. I've only used these a couple of times so far. But they seems to be high quality. First thing I did was drill 12 holes in steel washers for a project I'm doing. Using one of the 7/32" bits from this set I drilled all 12 holes in 1/8" thick steel and the bit seems still sharp enough to do some more. (Of course, I use oil to keep the bit point lubed during the drilling operation.) I also drilled a few holes in plaster walls to insert screw anchors. No problems so far. Clean cuts. Works fast. I'm satisfied these are a good value.

Helpful?5765PTASAS7M17351819798
May 28, 2026
anonymous
Top Reviewer
Item details
Model: 13PCS(1/16-1/4)
5 out of 5 stars review

Verified Purchase

this is a gift for a young man whose birthday is in September so writing of review ahead of time kind of bothers me but I'm hoping the quality is amazing and as great as the shipping was

Helpful?5765PTASAS7M17351819798
Jan 21, 2026
Alfred
Item details
Model: 21PCS(1/16-3/8)
5 out of 5 stars review

Verified Purchase

i like having this set on hand for the value and ease of finding the right size bit for my projects. the quality of walmarts bits are exceptional maternal

Incentivized Review
Helpful?5765PTASAS7M17351819798