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Irwin 7/8" - 1-1/8" Unibit Fractional Step drill

Irwin 10239
SKU IRW-10239
Irwin 7/8" - 1-1/8" Unibit Fractional Step drill

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Penetrate holes faster than previous unibits with this fractional step drill. This unibit step drill bit is Ideal for drilling holes into thin materials such as stainless steel, copper, brass, aluminum, plastic and laminates.

  • No. of Steps: 2.
  • Shank Diam: 1/8 in.
  • Packing Type: Carded.
  • Cutting Edge Material: HSS.
  • Measurement Type: Fractional.
  • Material Thickness: 1/8 in [Max].
  • Cutting Diam: 7/8 in [Min], 1 1/8 in [Max].

Similar Drill Bit Products

Irwin 10239 Description

Penetrate holes faster than previous unibits with this fractional step drill. This unibit step drill bit is Ideal for drilling holes into thin materials such as stainless steel, copper, brass, aluminum, plastic and laminates.

  • No. of Steps: 2.
  • Shank Diam: 1/8 in.
  • Packing Type: Carded.
  • Cutting Edge Material: HSS.
  • Measurement Type: Fractional.
  • Material Thickness: 1/8 in [Max].
  • Cutting Diam: 7/8 in [Min], 1 1/8 in [Max].

Similar Drill Bit Products

$63.21Each
In Stock-

Ships between 04/06/2026 - 04/07/2026

Country of Origin

Made in the U.S.A.
This item is proudly made in the United States of America.

Irwin
Visit The Irwin Store
See more Irwin Vise-Grip Step Drills

Product Specifications

Part Number10239, 585-10239
Country of OriginUSA
Weight0.45-lb
UPC385481024000

Shop Top 100 Tools & Hardware Products.

View other Drill Bit Best Sellers.

Manufacturer Description

7/8" - 1-1/8" Unibit Stepdrill

  • New SpeedPoint tip provides 6X faster initial penetration time than before and eliminates the need for center punching. Single-fluted cutting edge assures true round holes and allows greater control with less vibration. Ideal for drilling holes in thin m
  • Cutting Diam: 7/8 in Min 1 1/8 in Max
  • Packing Type: Carded
  • Weight: 0.51 lb
Prop65
Important PROP 65 InformationWarning: This product can expose you to chemicals, which are known to the State of California to cause cancer, birth defects, or other reproductive harm. For more information, go to www.p65warnings.ca.gov. to CA residents.
Irwin 7/8" - 1-1/8" Unibit Fractional Step drill
$63.21Each
In Stock-

Ships between 04/06/2026 - 04/07/2026

Country of Origin

Made in the U.S.A.
This item is proudly made in the United States of America.

Similar Drill Bit Products

Irwin 10239 Description

Penetrate holes faster than previous unibits with this fractional step drill. This unibit step drill bit is Ideal for drilling holes into thin materials such as stainless steel, copper, brass, aluminum, plastic and laminates.

  • No. of Steps: 2.
  • Shank Diam: 1/8 in.
  • Packing Type: Carded.
  • Cutting Edge Material: HSS.
  • Measurement Type: Fractional.
  • Material Thickness: 1/8 in [Max].
  • Cutting Diam: 7/8 in [Min], 1 1/8 in [Max].

Product Specifications

Irwin
Visit The Irwin Store
Part Number10239, 585-10239
Country of OriginUSA
Weight0.45-lb
UPC385481024000

Shop Top 100 Tools & Hardware Products.

View other Drill Bit Best Sellers.

Manufacturer Description

7/8" - 1-1/8" Unibit Stepdrill

  • New SpeedPoint tip provides 6X faster initial penetration time than before and eliminates the need for center punching. Single-fluted cutting edge assures true round holes and allows greater control with less vibration. Ideal for drilling holes in thin m
  • Cutting Diam: 7/8 in Min 1 1/8 in Max
  • Packing Type: Carded
  • Weight: 0.51 lb
Prop65
Important PROP 65 InformationWarning: This product can expose you to chemicals, which are known to the State of California to cause cancer, birth defects, or other reproductive harm. For more information, go to www.p65warnings.ca.gov. to CA residents.

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