Cobalt Drill Bit Set for Hardened Metal and Stainless Steel, 99Pcs M35 HSS Twist Jobber Metal Drill Bits 1/16"-3/8", with Plastic Index Storage Case
Cobalt Drill Bit Set for Hardened Metal and Stainless Steel, 99Pcs M35 HSS Twist Jobber Metal Drill Bits 1/16"-3/8", with Plastic Index Storage Case
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Sinyeenglon

Cobalt Drill Bit Set for Hardened Metal and Stainless Steel, 99Pcs M35 HSS Twist Jobber Metal Drill Bits 1/16"-3/8", with Plastic Index Storage Case

Cobalt Drill Bit Set for Hardened Metal and Stainless Steel, 99Pcs M35 HSS Twist Jobber Metal Drill Bits 1/16"-3/8", with Plastic Index Storage Case99 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 Case13 piece cobalt drill bit set M35 high speed steel torsion drill bit suitable for hardened metal
Model:99PCS(1/16-3/8)-Out of stock

Key item features

  • Cobalt M35 Material: High cost, but hardness is up to 67, cut faster and has a long life, up to 12 times compared with the average HSS titanium coated bit
  • Hardened Full Grinding Process: Increases wear resistance, sharp and durable, used for stainless steel, cast iron, titanium, aluminum and hard metal
  • Packaging: Hard and thick plastic box, drills bagged for compartmentalized storage, reasonable design, well secured package
  • Convenient Access: Various sizes are placed in different compartments of the plastic box, and the corresponding sizes of different drills are printed on the bottom of the lid, making it very convenient to access
  • 99Pcs 14 Various Sizes: 16Pcs 1/16 in, 16Pcs 5/64 in, 15Pcs 3/32 in, 10Pcs 7/64 in, 10Pcs 1/8 in, 8Pcs 9/64 in, 8Pcs 5/32 in, 3Pcs 11/64 in, 3Pcs 3/16 in, 2Pcs 13/64 in, 2Pcs 7/32 in, 2Pcs 1/4 in, 2Pcs 5/16 in, and 2Pcs 3/8 in
  • Use Notices: Drill bit should be vertical to the workpiece when used; controling low speed from 200 to 1000 rpm; using cutting fluid will stay cool to make the bit last longer
Current price is Now $49.49
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was $54.99
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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
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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?5765PTASAS7M17337709081
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?5765PTASAS7M17337709081
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?5765PTASAS7M17337709081