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1.4 out of 5 stars. 9 reviews
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Mibro 5/8 in. Silver and Deming Drill Bit

Mibro 5/8 in. Silver and Deming Drill Bit

Item # 390239099

Stocked & Ready
Mibro Mibro 5/8 in. Silver and Deming Drill Bit
Mibro Mibro 5/8 in. Silver and Deming Drill Bit
$20.79

Spend $49.99 to unlock free delivery!

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Mibro 5/8 in. Silver and Deming Drill Bit

Item # 390239099

Stocked & Ready
Mibro Mibro 5/8 in. Silver and Deming Drill Bit
Mibro Mibro 5/8 in. Silver and Deming Drill Bit

$20.79

Spend $49.99 to unlock free delivery!

Shopping at

Grassland (franklin) TN

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MIBRO 5/8 in. 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

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1.4
0 out of 8 (0%) reviewers recommend this product

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1 to 4 of 9 Reviews .
1 – 4 of 9 Reviews
WV
Review 1

Only lasted through drilling 5 holes.

a year ago
Needed to drill 6 holes in 1/4” ferrous metal. Drilled 5 holes and the Bit became too dull to drill the last hole. Used cutting oil and correct speed. Ok if you only need to drill 5 holes I guess.

No, I do not recommend this product.

Colchester, CT
Review 1

Low quality, improper relief angle...

2 years ago
The clearance angle on these is sharpened incorrectly, leading to the comments contained in this review section. The trailing edge of the drill flute was lower than the cutting edge, leading to dragging and heat build up. I sharpened mine after I tried drilling one hole and fixed the angles, but this was straight from the factory.

No, I do not recommend this product.

Louisiana
Reviews 4

don't waste your money on this garbage!

4 years ago
These bits are useless junk! They wear out before they even drill the first hole...even if you use slow speed AND use cutting oil to keep the bit cool! Don't waste your money on this inferrior junk!

No, I do not recommend this product.

Review 1

Disappointed

5 years ago
Product warped right out of package. You can see the rotation in a drill press

No, I do not recommend this product.