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Irwin 1/8" Left-Hand Mechanics Length Cobalt HSS Drill Bit

Irwin 30508
SKU IRW-30508
Irwin 1/8" Left-Hand Mechanics Length Cobalt HSS Drill Bit

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This left hand mechanics length cobalt high speed steel drill bit is made for drilling into hardened steel bolts for creating pilot holes for screw. It is eight percent cobalt alloyed for higher heat and abrasion resistance.

  • Cutting Diameter: 1/8 in.
  • Flute Length: 1 1/16 in.
  • Overall Length: 2 3/4 in.
  • Cutting Edge Material: HSS-E (Co-M42).
  • Finish: Gold Oxide.
  • No. of Flutes: 2.
  • Point Angle: 135 degree.
  • Point Shape: Split Point.
  • Shank Type: Cylinder.
  • Spiral Angle: CCW.
  • Structure: Solid.
  • Type: HSS Drill Bit.

Similar Drill Bit Products

Irwin 30508 Description

This left hand mechanics length cobalt high speed steel drill bit is made for drilling into hardened steel bolts for creating pilot holes for screw. It is eight percent cobalt alloyed for higher heat and abrasion resistance.

  • Cutting Diameter: 1/8 in.
  • Flute Length: 1 1/16 in.
  • Overall Length: 2 3/4 in.
  • Cutting Edge Material: HSS-E (Co-M42).
  • Finish: Gold Oxide.
  • No. of Flutes: 2.
  • Point Angle: 135 degree.
  • Point Shape: Split Point.
  • Shank Type: Cylinder.
  • Spiral Angle: CCW.
  • Structure: Solid.
  • Type: HSS Drill Bit.

Similar Drill Bit Products

$3.85Each
In Stock-

Ships between 02/23/2026 - 02/25/2026

Irwin
Visit The Irwin Store
See more Irwin Vise-Grip HSS Drill

Product Specifications

Part Number30508, 585-30508
Weight0.01-lb
UPC024721305084

Shop Top 100 Tools & Hardware Products.

View other Drill Bit Best Sellers.

Manufacturer Description

1/8IN COBALT 135DEG - LEFTHANDED-SCREW MACHINE-B

  • Tough metal drilling made for drilling into hardened steel bolts for creating pilot holes for screw extractors. 8% Cobalt alloyed for higher heat and abrasion resistance. Shorter drill for additional strength. Heavy-duty web construction for strength and du
  • Cutting Diam: 1/8 in
  • Finish: Gold Oxide
  • Type: HSS Drill Bit
  • Weight: 0 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 1/8" Left-Hand Mechanics Length Cobalt HSS Drill Bit
$3.85Each
In Stock-

Ships between 02/23/2026 - 02/25/2026

Similar Drill Bit Products

Irwin 30508 Description

This left hand mechanics length cobalt high speed steel drill bit is made for drilling into hardened steel bolts for creating pilot holes for screw. It is eight percent cobalt alloyed for higher heat and abrasion resistance.

  • Cutting Diameter: 1/8 in.
  • Flute Length: 1 1/16 in.
  • Overall Length: 2 3/4 in.
  • Cutting Edge Material: HSS-E (Co-M42).
  • Finish: Gold Oxide.
  • No. of Flutes: 2.
  • Point Angle: 135 degree.
  • Point Shape: Split Point.
  • Shank Type: Cylinder.
  • Spiral Angle: CCW.
  • Structure: Solid.
  • Type: HSS Drill Bit.

Product Specifications

Irwin
Visit The Irwin Store
Part Number30508, 585-30508
Weight0.01-lb
UPC024721305084

Shop Top 100 Tools & Hardware Products.

View other Drill Bit Best Sellers.

Manufacturer Description

1/8IN COBALT 135DEG - LEFTHANDED-SCREW MACHINE-B

  • Tough metal drilling made for drilling into hardened steel bolts for creating pilot holes for screw extractors. 8% Cobalt alloyed for higher heat and abrasion resistance. Shorter drill for additional strength. Heavy-duty web construction for strength and du
  • Cutting Diam: 1/8 in
  • Finish: Gold Oxide
  • Type: HSS Drill Bit
  • Weight: 0 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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