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amoolo 3/8" Cobalt Drill Bit(5Pcs), M35 HSS Metal Drill Bit Set for Hard Metal, Stainless Steel, Cast Iron

4.4 4.4 out of 5 stars 3,466 ratings
Amazon's Choice highlights highly rated, well-priced products available to ship immediately.
Amazon's Choice in Jobber Drill Bits by amoolo

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Purchase options and add-ons

Material Cobalt Steel
Shank Type Round
Cutting Angle String 135 Degrees
Brand amoolo
Tool Flute Type Spiral

About this item

  • 【5Pcs 3/8" Cobalt Drill Bits】5Pcs - 3/8”(Dia 9.26mm) x3-5/8”(Flute Length 92.08 mm) Metal Drill Bits.This drill bit fits the majority of power drill currently on the market.
  • 【M35 Cobalt High Speed Steel】Industry grade M35 high speed steel drill bit set, much harder than HSS used in other similar drill bits set. These drill bits contain 5% Cobalt, which increases wear-resistance and durability.
  • 【Fully Ground Process & 135° Split Point】Fully ground spiral groove design clears particles quickly, decreases friction and heat for a faster and cooler drilling performance. 135° split point with straight shank prevents walking and makes drilling precise and faster. No center punch is needed.
  • 【Multiple Application】Perfectly suitable for cutting through Hard Metal such as Stainless Steel, Steel, Sheet Metal and Cast Iron as well as Plastic, Aluminum Alloy, Wood and Other Softer Metals. ✔ Pay attention to speed, pressure and heat control during drilling.
  • 【90 Days Warranty】If you are not fully satisfied for any reason, please contact us for 100% refund or replacement.

Frequently bought together

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Sold by Owl Prime Designs and ships from Amazon Fulfillment.
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amoolo 3/8" Cobalt Drill Bit(5Pcs), M35 HSS Metal Drill Bit Set for Hard Metal, Stainless Steel, Cast Iron
amoolo 3/8" Cobalt Drill Bit(5Pcs), M35 HSS Metal Drill Bit Set for Hard Metal, Stainless Steel, Cast Iron
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Price$19.99-12% $14.99
List:$16.99
$27.99-10% $26.88
List:$29.77
$12.89-27% $21.99
List:$29.99
Delivery
Get it as soon as Wednesday, Mar 27
Get it as soon as Wednesday, Mar 27
Get it as soon as Wednesday, Mar 27
Get it as soon as Wednesday, Mar 27
Get it as soon as Wednesday, Mar 27
Get it as soon as Wednesday, Mar 27
Customer Ratings
Value for money
4.0
4.2
4.2
4.3
4.2
Durability
3.7
4.2
3.8
4.0
3.7
Longevity
3.7
4.1
3.8
4.0
Sold By
Amoolo Direct
POWERTEC USA
Lichamp
DrillHulk
STROTON
SUMEX TOOLS
material
Cobalt Steel
Cobalt
M35
High-Speed Steel and 5% Cobalt
Cobalt, High Speed Steel
High Speed Steel
shank type
Round
Straight
Round
3-Flat
Straight
Straight
tool flute type
Spiral
Spiral
Spiral
Spiral
Spiral
Spiral
finish type
Nickel
Titanium
Gold Oxide
Titanium
surface suggestion
Stainless Steel,Cast Iron,Plastic,Metal,Steel
Iron,Metals,Stainless,Steel
Metal
Stainless Steel
Pvc,Wood,Aluminum,Stainless Steel,Plastic,Metal,Steel,Iron
Wood,Aluminum,Cast Iron,Fiberglass,Plastic,Steel
cutting angle string
135 degrees
135 degrees
135 degrees
135 degrees
135 degrees
135 degrees

Product information

Warranty & Support

Product Warranty: For warranty information about this product, please click here

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amoolo

amoolo 3/8" Cobalt Drill Bit(5Pcs), M35 HSS Metal Drill Bit Set for Hard Metal, Stainless Steel, Cast Iron


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From the brand


Product Description

AMOOLO COBALT DRILL BIT COLLECTION - EVERY DAY WORK SMART

COBALT DRILL BIT SET

FEATURES

AMOOLO - EVERY DAY WORK SMART

DRILL BIT SET

Looking for specific info?

Customer reviews

4.4 out of 5 stars
4.4 out of 5
3,468 global ratings

Customers say

Customers like the value, sharpness and durability of the drill bits. For example, they mention that it's well worth the great price, the bits cut well and that they're a bargain priced cobalt. That said, some complain about the durability and material. They say that the bits snap easily and are not appropriate for metal. Opinions are mixed on quality.

AI-generated from the text of customer reviews

82 customers mention82 positive0 negative

Customers appreciate the value of the drill bits. They say it's well worth the great price, a bargain priced cobalt that is worth more than what, and a good buy.

"The bits seem to be cutting very nicely in wood or metal. Great value. I’ll be ordering more to replace my other bits when needed." Read more

"...Best price out there! Great quality! Would definitely buy again and would definitely recommend." Read more

"good price" Read more

"...So these seem to be a pretty good value." Read more

78 customers mention67 positive11 negative

Customers like the sharpness of the drill bits. For example, they mention that they cut very well for mild steel, stainless steel, and hard materials. Some say that the bits are sharp as cat's teeth and that they are easy on the wallet.

"The bits seem to be cutting very nicely in wood or metal. Great value. I’ll be ordering more to replace my other bits when needed." Read more

"...They got the job done. They are very sharp and produce nice clean holes." Read more

"...But hard cuts well I’ll definitely buy again because when they are drilling they drill amazing" Read more

"Using to drill stainless steel! Bits are good quality and staying sharp!" Read more

10 customers mention7 positive3 negative

Customers like the storage case of the drill bits. They say it's a nice set, with a tidy carry case.

"...They are a nice bit set that I plan on keeping sharpened for a long time." Read more

"I like everything about this product including the case and organization. The bits are very good quality for home improvement projects...." Read more

"Sharp drill bits. Crappy storage case. But I didn't buy them for the storage case...." Read more

"Wow the case is nice and delivery was quick." Read more

238 customers mention143 positive95 negative

Customers are mixed about the quality of the drill bits. Some mention that the quality is good, the durability is great, and they are excellent long-lasting drill bits; while others say that they break and dull very easily, and don't last. They also mention that they seem a little more brittle than other 1/8 inch bits.

"...Best price out there! Great quality! Would definitely buy again and would definitely recommend." Read more

"...several and it seems if a hard spot is hit and the bit gets warm, it will break...." Read more

"Using to drill stainless steel! Bits are good quality and staying sharp!" Read more

"...I broke about 3 bits on my first hole. The drills cut well and work fine once you get used to them, but you do have to concentrate on keeping them..." Read more

9 customers mention6 positive3 negative

Customers are mixed about the appearance of the drill bits. Some mention that they look good, are in good condition, and do their job well. However, others say that the case is designed very poorly and the bit does not look too good.

"...These bits did the job and are still in good condition meaning not dull. Great bits, great price!" Read more

"...Its only the first bit out of this set but its not looking too good. Your milage may vary...." Read more

"...the metal, just let the bit do it’s job and the finished product will come out nicely. Highly recommended for hobby/household use." Read more

"Look good but we will have to see!" Read more

22 customers mention6 positive16 negative

Customers are dissatisfied with the material of the drill bits. They mention that it's not appropriate for metal, hard metals, or stainless steel. Some say that the size of the bits are incredibly ineffective in going through metal.

"Bits were sharp,but wouldnt penetrate ceramic tile,tried for several minutes and didnt even leave a mark or scratch...." Read more

"...work better in wood or plastic but they are certainly not designed to be used with steel." Read more

"It works in steel!" Read more

"...use with certain sizes of the drill bits were incredibly ineffective in going through metal...." Read more

15 customers mention0 positive15 negative

Customers are dissatisfied with the durability of the drill bits. They mention that the bits snap easily, especially when they're used on hard materials like aluminum. Some customers also report that the tips get dull quickly. Overall, customers are disappointed with the quality and durability of these bits.

"when they're cutting, they are great. However, these snap all the time if youre not perfectly straight up and down...." Read more

"...3rd bit got dull due to no oil and a snapped tip. They still shaved the bit from the sides. Made my difficult job a little easier...." Read more

"While drilling 1/4” aluminum the bits kept snapping" Read more

"...They worked pretty good with cutting oil. However I did snap one of the bits in two...." Read more

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Top reviews from the United States

Reviewed in the United States on March 3, 2024
Size: 5/64 in 10pcsVerified Purchase
Reviewed in the United States on March 17, 2024
Size: 1/8 in (10pcs)Verified Purchase
Reviewed in the United States on December 12, 2023
Size: 1/8 in (10pcs)Verified Purchase
2 people found this helpful
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Reviewed in the United States on March 18, 2024
Size: 5/32 in (10pcs)Verified Purchase
Reviewed in the United States on March 8, 2024
Size: 1/8 in (10pcs)Verified Purchase
Reviewed in the United States on February 27, 2024
Size: 1/8 in (10pcs)Verified Purchase
Reviewed in the United States on September 12, 2023
Size: 1/8 in (10pcs)Verified Purchase
3 people found this helpful
Report
Reviewed in the United States on March 4, 2024
Size: 1/4 in (10pcs)Verified Purchase

Top reviews from other countries

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Amazon Customer
5.0 out of 5 stars Impressive
Reviewed in Canada on December 25, 2023
Size: 1/4 in (10pcs)Verified Purchase
Irineo
5.0 out of 5 stars Excelente calidad-precio
Reviewed in Mexico on June 22, 2020
Size: 1/16-1/4 in (13pcs)Verified Purchase
Amazon Customer
5.0 out of 5 stars Good value & works well on stainless steel.
Reviewed in Canada on December 6, 2023
Size: 3/8 in (5pcs)Verified Purchase
bruce wagner
4.0 out of 5 stars they work
Reviewed in Canada on February 11, 2023
Size: 5/16 in (10pcs)Verified Purchase
realchenardPEINTRE DEBOSSAGE
5.0 out of 5 stars BON ACHAT
Reviewed in Canada on November 23, 2023
Size: 1/16-1/4 in (13pcs)Verified Purchase