Mibro 17 pc. Cobalt Steel Drill Bit Set
Mibro 17 pc. Cobalt Steel Drill Bit Set
Item # 390324999
$51.99
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$51.99
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Grassland (franklin) TN
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The Mibro 17 pc. Cobalt Steel Drill Bit Set is designed to make precise holes in hard metals such as stainless steel this precision ground drill is made with cobalt high speed steel to withstand the heat and pressure of drilling into hard materials. This drill bit set is suitable for use on wood, wood composites, plastics and repetitive drilling in most metals - not recommended for hard metals such as stainless steel
- 1/16 (x2), 5/64, 3/32, 7/64, 1/8 (x2), 9/64, 5/32, 11/64, 3/16, 13/64, 7/32, 15/64, 1/4, 5/16, 3/8 in.
- This drill bit set is suitable for use on wood, wood composites, plastics and all metals including hard metals such as stainless steel
- Made with M35 High Speed Steel containing 5% cobalt for superior heat resistance
- Fully ground manufacturing ensures straighter more precise holes
- Drill body features a tapered core for increased strength
- 135° split point tip on all drills 1/8 in. diameter and larger eliminates the need for a center punch and keeps the drill bit from walking
- 3 flats on drill shanks larger than 3/16 in. insure that it is held tightly in the drill chuck
| Brand | Mibro |
|---|---|
| Country of Origin | Imported |
| Bit Length | 7.89 - 5 in. |
| Drill Bit Types | Twist |
| Material Applications | Wood, Plastic, Composite, Metal |
| Maximum Bit Diameter | 3/8 in. |
| Maximum Drilling Depth | 4 in. |
| Minimum Bit Diameter | 1/16 in. |
| Minimum Chuck Size | 3/8 in. |
| Package Quantity | 17 |
| Primary Material | Cobalt |
| Product Weight | 1 lb. |
| Shank Diameter | 0.06 -0.37 in. |
| Warranty | Limited |
| Manufacturer Part Number | 492470 |
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Newest questions
Q: In the description it clearly states “designed to make precise holes in hard metals such as stainless steel....”. Later in the same description it states “not recommended for hard metals such as stainless steel”. Well, which is it?
4 years ago1 Answer
- A: Cobalt drill bits are designed for repetitive drilling in ferrous and non-ferrous metals and hard metals such as stainless steel.4 years agoHelpful?
Q&As
Start typing your question and we'll check if it was already asked and answered.
1 - 1 of 1 Question
Newest questions
Q: In the description it clearly states “designed to make precise holes in hard metals such as stainless steel....”. Later in the same description it states “not recommended for hard metals such as stainless steel”. Well, which is it?
4 years ago1 Answer
- A: Cobalt drill bits are designed for repetitive drilling in ferrous and non-ferrous metals and hard metals such as stainless steel.4 years agoHelpful?
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Reviews
Most Helpful Favorable Review
5 out of 5 stars.
Best bit ever
8 years ago
They cut stainless steel like its aluminum . Best bits I have ever used.
3 people found this helpful
Show Reviews:
Most Helpful Critical Review
2 out of 5 stars.
Not worth the money
8 years ago
I got this set to try and drill out some broke bolts on a few projects i had piling up. Not a single bit would even throw a shaving unless i started hitting the aluminum casing. I figured maybe these are just some crazy hard 1/4" bolts so i tried drilling through a scrap piece of angle that i had and got the same result. Not drilling. Yes i was keeping the bits cool. Only reason for 2 stars and not 1 is that i like the case.
3 people found this helpful
Show Reviews:
Customer Images and Videos
- drilling
- dull
- metal
- quality
- results
- shortcoming
- value
1 to 4 of 7 Reviews .
1 – 4 of 7 Reviews
Most Recent
Review 1
5 out of 5 stars.
Works well - good value
a year ago
Needed a 1/4 bit to drill 1/4 flat stock…total of 40 holes. Drill press along with a couple drops of drilling fluid got the project done quickly. Performed as/better than expected.
Yes, I recommend this product.
Missouri
Reviews 3
1 out of 5 stars.
Junk
3 years ago
Junk will not drill through 16 gauge metal. All bits are dull
No, I do not recommend this product.
Hamlin, PA
Review 1
1 out of 5 stars.
Not impressed
4 years ago
On the forth hole in 1/4 inch stainless the bit fried even with constant lubrication to keep it cool. First couple holes were great but three was slow, four led to complete failure.
SweepstakesYes
No, I do not recommend this product.
Charlotte, nc
Review 1
2 out of 5 stars.
Not worth the money
8 years ago
I got this set to try and drill out some broke bolts on a few projects i had piling up. Not a single bit would even throw a shaving unless i started hitting the aluminum casing. I figured maybe these are just some crazy hard 1/4" bolts so i tried drilling through a scrap piece of angle that i had and got the same result. Not drilling. Yes i was keeping the bits cool. Only reason for 2 stars and not 1 is that i like the case.
No, I do not recommend this product.