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⚡ Drill Like a Pro, Last Like a Legend
The amoolo 1/4" Cobalt Drill Bit 10 Pcs set features premium M35 high-speed steel with 5% cobalt for superior wear resistance. Designed with a 135° split point and fully ground spiral flutes, these bits deliver precise, fast, and cool drilling across hard metals like stainless steel and cast iron, as well as 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 | #7,057 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #12 in Jobber Drill Bits |
| Brand | amoolo |
| Brand Name | amoolo |
| Customer Reviews | 4.5 out of 5 stars 4,268 Reviews |
| Cutting Angle String | 135 degrees |
| Cutting Diameter | 0.25 inches |
| Finish Type | Uncoated |
| Finish Types | Uncoated |
| Item Highlight | M35 HSS Metal Drill Bits Set for Hard Metal, Stainless Steel, Cast Iron Box of 10 |
| 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 | 1 |
| 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 |
B**R
GOOD DRILL BITS
Work well. Clears cuttings really well.
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.
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!
A**.
Sharp, cuts good and lasts a long time.
I had a big job where I needed to drill a couple of hundred pilot holes into steel sheet. So I bought these bits knowing that my current bit supplies were getting old. I kept waiting for the first bit to get dull and it never did. I did frequently dip it in oil and kept it cool during drilling. The longevity was surprising.
G**I
Great buy, tough, sharp, drill in hard metal!
Drilled through spring steel, best bit for the money
S**H
High Quality Bits
High quality. Exactly what I needed and hoped they would be. The correct size, made of stainless steel, and very sharp
D**.
Spend the Money on a Single Capable Drill Bit
Fails to perform with hardened steel.
A**R
Best for stainless steel. Work great
I bought these drill bits in 1/8 1/4 and 6.5mm for drilling out stainless steel rivets. They worked very well. Drill at slow speed for best results on SS. The 1/8 size, extra care is needed as they are small and break if to much pressure is used Never broke any of the larger sizes
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.
A**.
Bien
Bien
B**M
Good drill bits
Work good for stainless steel shaft. Much cheaper then buying local
Trustpilot
3 weeks ago
5 days ago