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Power Tools for Professionals

BL4209

6 pc. 4-1/8 In. I Letter Black Oxide Drill Bits

The Bosch line of metal drill bits offers a solution for every professional application. Each bit is manufactured to exacting specifications and features a split point that starts on contact with no walking or skating, eliminating the need for a center punch. Bosch black oxide bits offer superior durability, speed and selection to support most general-purpose applications.

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Technical Data

Specification
Bulk false
Diameter I
Flute Length 3.125
Length 4.125"
Overall Length 4.125
Quantity 6 (bulk)
Shank Diameter 0.272

Benefits

  • Speed helix design for three times faster drilling than standard bits
  • Last 50% longer than high-speed steel
  • Easier drilling, reduced heat and extended drill bit life
  • Available in jobber length, stubby length, extended length (aircraft), 1/2 In. reduced shank (Silver and Deming)
  • For use in steel, copper, aluminum, brass, oak, maple, MDF, pine, PVC, polycarbonate, acrylic, ABS, nylon and composite materials

Other sizes

Diameter

X

Overall Length

5.125

Quantity

6 (bulk)

Shank Diameter

0.397

Diameter

Y

Overall Length

5.25

Quantity

6 (bulk)

Shank Diameter

0.404

Diameter

Z

Overall Length

5.25

Quantity

6 (bulk)

Shank Diameter

0.412999

Diameter

B

Overall Length

4

Quantity

12 (bulk)

Shank Diameter

0.237998

Diameter

H

Overall Length

4.125

Quantity

6 (bulk)

Shank Diameter

0.266

Diameter

K

Overall Length

4.25

Quantity

6 (bulk)

Shank Diameter

0.281

Diameter

N

Overall Length

4.375

Quantity

6 (bulk)

Shank Diameter

0.301999

Diameter

Q

Overall Length

4.75

Quantity

6 (bulk)

Shank Diameter

0.332

Diameter

R

Overall Length

4.75

Quantity

6 (bulk)

Shank Diameter

0.339

Contact Us

Call our Service Hotline or use our contact form.

1-877-BOSCH99 (1-877-267-2499)

Mon-Fri: 7:00-19:00 CST

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Mon-Fri: 7:00-19:00 CST