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🔩 Drill Like a Pro, Finish Like a Boss!
The amoolo 1/4" Cobalt Drill Bit Set features 10 precision-engineered M35 high-speed steel bits with 5% cobalt for superior hardness and durability. Designed with a 135° split point and fully ground spiral flutes, these bits deliver fast, cool, and accurate drilling on tough metals like stainless steel and cast iron, plus softer materials. Compatible with most power drills and backed by a 90-day warranty, this set is a must-have for professionals and DIYers aiming for flawless results.






| ASIN | B07XMM4CPY |
| Best Sellers Rank | #5,337 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #15 in Jobber Drill Bits |
| Brand | amoolo |
| Brand Name | amoolo |
| Customer Reviews | 4.5 out of 5 stars 4,182 Reviews |
| Cutting Angle String | 135 Degrees |
| Cutting Diameter | 0.25 Inches |
| Finish Type | Uncoated |
| Finish Types | Uncoated |
| Item Weight | 0.1 Pounds |
| Manufacturer | amoolo |
| Material | Cobalt Steel |
| Material Type | Cobalt Steel |
| Minimum Bore Diameter | 0.25 Inches |
| Model | AT190214 |
| Number of Flutes | 2 |
| Part Number | AT190214 |
| Point Style | Split Point |
| Shank Type | Round |
| Surface Recommendation | Cast Iron,Metal,Plastic,Stainless Steel,Steel |
| Tool Flute Type | Spiral |
| UPC | 778716244598 |
| Unit Count | 10 Count |
C**.
Great bit set
Pretty durable. I Put these bits through the ringer already and they are still sharp. Easy drilling and a good price,hard to beat.
M**Y
Best bits ever
I have always run to Home Depot to pick up bits. But these are the sharpest most durable bits I have ever purchased. DeWalt and Milwaukee can't even compare.
K**N
Good quality
Bits work great and at a great price
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
K**R
Awesome Drill Bits
Great value bit set. They are very sharp and have drilled through everything up to .25” steel so far. I would definitely buy them again.
G**S
Right tool for the job.
Needed to drill about 25 holes in stainless structural trim. A little cutting oil, and worked exactly as I needed.
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!
G**N
Straight and Sharp
So far, these seem to be well made, straight and sharp. They drill aluminum cleanly but I haven't used them on steel yet. So far, so good.
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.
B**M
Good drill bits
Work good for stainless steel shaft. Much cheaper then buying local
P**E
good bits
I go through a lot of bits in a year, these bits are as advertised, I've drilled some pretty hard material, these bits are holding up and keeping their edge
K**R
Read the product description
These bits are really brittle, so you need to read the description carefully to make sure you have the right set-up. Don’t be an idiot like me and try drilling deeper holes in wood without a press.
Trustpilot
1 month ago
1 month ago