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🔩 Drill Like a Pro, Last Like a Legend
The amoolo 1/4" Cobalt Drill Bit 10-piece set features M35 high-speed steel with 5% cobalt for superior wear resistance. Its 135° split point and fully ground spiral flutes deliver precise, fast, and cool drilling across hard metals and softer materials. Designed for compatibility with most power drills, this set is backed by a 90-day warranty, making it a reliable choice for professionals and DIYers alike.
| ASIN | B07XMM4CPY |
| Best Sellers Rank | #5,658 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #16 in Jobber Drill Bits |
| Brand | amoolo |
| Brand Name | amoolo |
| Customer Reviews | 4.5 out of 5 stars 4,239 Reviews |
| Cutting Angle String | 135 degrees |
| Cutting Diameter | 0.25 inches |
| Finish Type | Uncoated |
| Finish Types | Uncoated |
| Item Weight | 1.6 ounces |
| Manufacturer | amoolo |
| Material | Cobalt Steel |
| Material Type | Cobalt Steel |
| Minimum Bore Diameter | 0.25 inches |
| Model | AT190214 |
| Number of Flutes | 2 |
| Number of Pieces | 10 |
| Part Number | AT190214 |
| Point Style | Split Point |
| Set Name | amoolo 1/4" Cobalt Drill Bit Set |
| Shank Type | Round |
| Surface Recommendation | Cast Iron,Metal,Plastic,Stainless Steel,Steel |
| Tool Flute Type | Spiral |
| UPC | 778716244598 |
| Unit Count | 10 Count |
K**I
Long lasting bits
Very impressive drill bits. 1 bit drilled 16 holes in very hard metal. These bits out performed M42 bits I had.
C**S
Best drill bits I have ever purchased
Awesome product, very strong material, cut right through 1/4 stainless steel with no issues smoothness of the cut was perfect. Will def continue to purchase my bits from here.
H**N
"NOT for use on..." on the cover
Work fine for me so far. I was dismayed to see on the cover a list of metals on which I should NOT use these drills, some of which look like very popular metals I may need to drill. Moreso since I lack the expertise needed to distinguish the "bad" types of steel from any other types of steel. Though, for the price, paying for any mistakes I may make will not be tragic
A**G
Very nice product
Sharp, excellent drill bits. Such a pleasure to use!
J**C
Good product
Should work great
G**Y
Durable and Sharp, But Could Last Longer
The Amoolo 1/4" Cobalt Drill Bits are sharp and cut through metal, wood, and plastic with ease. They don’t overheat quickly, and the precision is great. The value for a 10-pack is solid. However, I noticed they wear out faster than expected when drilling through harder metals. For light to medium-duty work, they’re excellent, but for heavy use, they might not last as long. Overall, a good buy for the price!
M**D
Good quality. I do recommend this product.
Very good. High quality drill bids. I would buy them again when need it. Easy completed small project by drilling 15-20 holes in 1/8'' thick material, using only one bid. It's steel as sharp as when I have started to drill.
E**S
The product
Received exactly what and when I was advertised
A**A
Doesn't work as claimed
This doesn't work as expected. Too high price
I**O
Excelente calidad-precio
Excelente brocas para metal duro y diferentes tamaños para el uso de trabajo.
C**S
Decent. No complaints.
I love sharp good quality drill bits. So far these have served me well.
P**0
Drill bits
Good quality drill bits
D**E
Blunt quickly on mild steel
I needed these to drill through mild steel (T-bar fence posts). I think I managed about 5 holes per drill bit before each was too blunted to cut. I needed to research the technique: low RPM, lots of pressure and lubrication. Fortunately I needed to drill only about 20 holes in total, so I have used 5 out of the 10 bits so far. I am told that this is probably about what can be expected from cheap bits so I am pretty happy with the purchase.
Trustpilot
4 days ago
1 month ago