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⚡ Drill smarter, not harder — power through metals with precision and speed!
The STROTON Metric M42 8% Cobalt Twist Drill Bits Set features 19 precision-engineered bits ranging from 1mm to 10mm, crafted from high-grade cobalt steel with 68-70 HRC hardness. Designed for superior heat and wear resistance, these bits drill stainless steel, hard metals, and hardwood up to 5 times faster with a 135° split point for clean, efficient cuts. Ideal for professionals demanding durability, speed, and versatility in one comprehensive set.








| ASIN | B07MZQMPMC |
| ASIN | B07MZQMPMC |
| Best Sellers Rank | #7,844 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #45 in Power Drill Bit Sets |
| Brand Name | STROTON |
| Customer Reviews | 4.4 4.4 out of 5 stars (4,456) |
| Customer reviews | 4.4 4.4 out of 5 stars (4,456) |
| Cutting Angle String | 135 Degrees |
| Cutting Diameter | 10 Millimeters |
| Date First Available | 2 March 2019 |
| Finish Types | Uncoated |
| Is Discontinued By Manufacturer | No |
| Item Weight | 454 g |
| Manufacturer | STROTON |
| Manufacturer | STROTON |
| Material Type | Cobalt |
| Minimum Bore Diameter | 1 Millimeters |
| Number of Flutes | 2 |
| Package Dimensions | 17.6 x 12.5 x 4.4 cm; 453.59 g |
| Point Style | Split Point |
| Shank Type | Straight |
| Surface Recommendation | Stainless Steel, Hard Metal, Hardwood, Aluminum, Plastic |
| Tool Flute Type | Spiral |
| UPC | 743829466298 |
| Unit Count | 1 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.
M**N
Didn't cut hardened steel quite as good as full cobalt bits, but way-way better than regular titanium coated bits. For the price and a full set, these performed very well as expected. The stepped cutting edge is a nice feature, and the cutting face was barely scratched going through a M10-30 oxide 10.9 bolt. Will be nice to have for future tough situations.
K**I
Las compré para inoxidables y se soporta las cargas como todo con el uso prolongado van perdiendo filo pero dura bastante para su precio
G**.
Punte di ottima qualità, solo una a distanza di tempo si è spezzata. Ho scritto al venditore, il quale ha provveduto tempestivamente a inviarmi il ricambio. Venditore serio e professionale.
J**A
Gostei As brocas são muito boas
B**K
Strong drill bits and last for a long time
ترست بايلوت
منذ شهر
منذ شهر