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2.1 out of 5 stars. 7 reviews
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Mibro 11/16 in. Silver and Deming Drill Bit

Mibro 11/16 in. Silver and Deming Drill Bit

Item # 3902405

Stocked & Ready
Mibro Mibro 11/16 in. Silver and Deming Drill Bit
Mibro Mibro 11/16 in. Silver and Deming Drill Bit
$26.49

Spend $49.99 to unlock free delivery!

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Mibro 11/16 in. Silver and Deming Drill Bit

Item # 3902405

Stocked & Ready
Mibro Mibro 11/16 in. Silver and Deming Drill Bit
Mibro Mibro 11/16 in. Silver and Deming Drill Bit

$26.49

Spend $49.99 to unlock free delivery!

Shopping at

Grassland (franklin) TN

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MIBRO High-Speed Steel (HSS) Silver & Deming Drill Bits are designed for creating large-diameter holes in materials that require more cutting capacity than standard drill bits can provide. Ideal for general-purpose drilling in wood, plastics, and most ferrous and nonferrous metals - including mild steel, cast iron, sheet metal, aluminum, copper, and brass - these bits deliver dependable performance for workshop and fabrication projects. Their reduced shank allows larger diameter bits to fit into drill chucks with a 3/8 in. (9.5 mm) capacity, making them a practical solution for drilling oversized holes. The 135° split-point tip helps reduce walking and eliminates the need for a center punch on many applications for faster, more accurate starts. Three flats on the shank provide a secure grip in the drill chuck to help reduce slipping during use. For best results, use these drill bits in a drill press at speeds up to 400 RPM. Not recommended for drilling high-grade or stainless steel.

Looking for more information on tools? Check out our guide on essential woodworking power tools in the product documents section.

  • Designed to drill large-diameter holes beyond the capacity of standard drill bits
  • Suitable for use on wood, plastics, and most ferrous and nonferrous metals, including mild steel, cast iron, aluminum, copper, and brass
  • Reduced shank fits drill chucks with a 3/8 in. (9.5 mm) capacity
  • 135° split-point tip helps reduce walking and eliminates the need for a center punch
  • Three flats on the shank provide a secure grip in the drill chuck to help reduce slipping
  • Best suited for drill press use at speeds up to 400 RPM; not recommended for high-grade or stainless steel

Q&As

1 - 1 of 1 Question

Q: Is this bit good for drilling steel and cast iron, etc. hard metals?

7 years ago
1 Answer
  • A: Yes – it can be used for drilling in steel and cast iron but not very hard metals like stainless steel. The trick is to drill slowly, if possible, use a lubricant to keep the drill bit cool. Kind Regards MIBRO Customer Service and Sales Support
    7 years ago
    Helpful?

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Reviews

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2.1
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Customer Images and Videos

1 to 4 of 7 Reviews .
1 – 4 of 7 Reviews
Decatur, Al
Review 1

Do not purchase

2 years ago
Not even a single use bit. Dull and very soft metal. Do not purchase.

No, I do not recommend this product.

Cornersville, Tn
Review 1

Junk

2 years ago
Wouldn't cut, AT ALL! Had to Sharpen the junk before I could use it. Already had 5/8 holes and just needed to open them up to 11/16 and it wouldn't work. The trailing edge was higher than the cutting edge. Mibro is junk!!

No, I do not recommend this product.

Pratt
Review 1

Poor quality

4 years ago
The 3/8 shank causes a week point. Drill bit bent first time using it

No, I do not recommend this product.

MI
Reviews 3

Sharp but not durable

6 years ago
Worked great to drill holes in truck frame for mounts and stayed sharp but after just one hole it was no longer straight and true in the drill. The whole bit bent ant warped outa straight.

No, I do not recommend this product.