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Irwin 1-1/8" High Speed Steel Unibit Fractional Step Drill

Irwin 10313
SKU IRW-10313
Irwin 1-1/8" High Speed Steel Unibit Fractional Step Drill

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The single-fluted cutting edge of this step drill set assures true round holes, and allows greater control with less vibration. Its New SpeedPoint tip provides 6 times faster initial penetration time than before, and eliminates the need for center punching. A titanium nitride finish causes less friction which increases speed and increases product life by 6 times.

  • Cutting Diameter: 1 1/8 in.
  • Cutting Edge Material: HSS.
  • Measurement Type: Fractional.
  • Packing Type: Carded.
  • Shank Diameter: 1/2 in.

Similar Drill Bit Products

Irwin 10313 Description

The single-fluted cutting edge of this step drill set assures true round holes, and allows greater control with less vibration. Its New SpeedPoint tip provides 6 times faster initial penetration time than before, and eliminates the need for center punching. A titanium nitride finish causes less friction which increases speed and increases product life by 6 times.

  • Cutting Diameter: 1 1/8 in.
  • Cutting Edge Material: HSS.
  • Measurement Type: Fractional.
  • Packing Type: Carded.
  • Shank Diameter: 1/2 in.

Similar Drill Bit Products

$76.89Each
In Stock-

Ships between 02/26/2026 - 03/02/2026

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

Product Specifications

Part Number10313, 585-10313
Weight0.30-lb
UPC038548103136

Shop Top 100 Tools & Hardware Products.

View other Drill Bit Best Sellers.

Manufacturer Description

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: 1 1/8 in
  • Packing Type: Carded
  • Weight: 0.48 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 1-1/8" High Speed Steel Unibit Fractional Step Drill
$76.89Each
In Stock-

Ships between 02/26/2026 - 03/02/2026

Similar Drill Bit Products

Irwin 10313 Description

The single-fluted cutting edge of this step drill set assures true round holes, and allows greater control with less vibration. Its New SpeedPoint tip provides 6 times faster initial penetration time than before, and eliminates the need for center punching. A titanium nitride finish causes less friction which increases speed and increases product life by 6 times.

  • Cutting Diameter: 1 1/8 in.
  • Cutting Edge Material: HSS.
  • Measurement Type: Fractional.
  • Packing Type: Carded.
  • Shank Diameter: 1/2 in.

Product Specifications

Irwin
Visit The Irwin Store
Part Number10313, 585-10313
Weight0.30-lb
UPC038548103136

Shop Top 100 Tools & Hardware Products.

View other Drill Bit Best Sellers.

Manufacturer Description

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: 1 1/8 in
  • Packing Type: Carded
  • Weight: 0.48 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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