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⚡ Drill Like a Pro, Last Like a Legend
The M42 8% Cobalt Twist Drill Bits (12mm, 2pcs) are engineered for professionals demanding precision and durability. Featuring premium cobalt steel with a 68-70 HRC rating, these bits deliver exceptional heat and wear resistance. Their innovative 3-step tip design and 135° split point ensure fast, accurate drilling through stainless steel, hard metals, and more. Designed to run 3-5 times faster than standard bits, they minimize downtime and cost per hole, making them an essential upgrade for any serious toolkit.









| ASIN | B081Z8GW47 |
| Best Sellers Rank | #12,708 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #30 in Jobber Drill Bits |
| Brand | STROTON |
| Brand Name | STROTON |
| Customer Reviews | 4.4 out of 5 stars 4,679 Reviews |
| Cutting Angle String | 135 Degrees |
| Cutting Diameter | 12 Millimeters |
| Cutting angle string | 135 Degrees |
| Cutting diameter | 12 Millimeters |
| Finish Types | Hardened |
| Finish type | Hardened |
| Item Weight | 1 Pounds |
| Manufacturer | WnewTools Ltd |
| Material | Cobalt |
| Material Type | Cobalt |
| Model | M42 Cobalt-8 |
| Number of Flutes | 2 |
| Number of Pieces | 2 |
| Part Number | M42 Cobalt-8 |
| Set Name | 2-Piece Set |
| Shank Type | Straight |
| Shank type | Straight |
| Surface Recommendation | Wood |
| Tool Flute Type | Spiral |
| UPC | 630808641305 |
| Unit Count | 2 Count |
J**I
Good quality
Very good quality
B**E
Very good drill bits
Great drill bits. They cut through stainless steel very nicely if you take your time and use a cutting fluid to keep them cool. Had a minor issue with one of the bits snapping (my fault) but the seller took care of the issue immediately and was very responsive.
C**S
Very high quality drills
I am a metal worker for 23 years, hard to find any better cobalt drills. Highly recommended.
C**N
Excelente producto
Puedes hacer agujeros con facilidad en metales duros como inox 316
K**I
Si duran
Las compré para inoxidables y se soporta las cargas como todo con el uso prolongado van perdiendo filo pero dura bastante para su precio
A**N
So far, so good.
This set of drill bits had all the bits I needed for the job it was purchased for. At this stage they are handling the job and lasting. Looks like the right tool for the job, so far.
J**A
Brocas metálica
Gostei As brocas são muito boas
H**T
Good quality M42
Very good M42 grill bit. I used for 316 stein steel. It working well.
Trustpilot
2 months ago
2 weeks ago