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⚡ Drill Smarter, Not Harder — Own the Toughest Jobs with Ease!
The M42 8% Cobalt Twist Drill Bits (12mm, 2-pack) are engineered for professionals demanding peak performance. Crafted from premium cobalt steel with a 68-70 HRC hardness, these bits deliver exceptional heat and wear resistance. Featuring a 3-step split point design, they start drilling immediately with minimal force and prevent walking. Ideal for stainless steel, hard metals, and more, they run 3-5 times faster than standard bits, offering superior efficiency and cost savings on every project.









| ASIN | B081Z8GW47 |
| ASIN | B081Z8GW47 |
| Best Sellers Rank | #3,880 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #13 in Jobber Drill Bits |
| Brand Name | STROTON |
| Customer Reviews | 4.4 4.4 out of 5 stars (4,529) |
| Customer reviews | 4.4 4.4 out of 5 stars (4,529) |
| Cutting Angle String | 135 Degrees |
| Cutting Diameter | 12 Millimeters |
| Date First Available | 13 January 2021 |
| Finish Types | Hardened |
| Is Discontinued By Manufacturer | No |
| Item Weight | 1 Pounds |
| Item model number | M42 Cobalt-8 |
| Manufacturer | WnewTools Ltd |
| Manufacturer | WnewTools Ltd |
| Material Type | Cobalt |
| Model | M42 Cobalt-8 |
| Number of Flutes | 2 |
| Number of Pieces | 2 |
| Package Dimensions | 18.29 x 10.16 x 2.03 cm; 453.59 g |
| Part Number | M42 Cobalt-8 |
| Set Name | 2-Piece Set |
| Shank Type | Straight |
| Surface Recommendation | Wood |
| Tool Flute Type | Spiral |
| UPC | 630808641305 |
| Unit Count | 2 Count |
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