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Irwin 1/2" x 18" Installer Bit

Brand: Irwin Mfg#: 39108ZR
Product#: 17339108ZR
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WARNING: Cancer and Reproductive Harm -  www.P65Warnings.ca.gov.

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Irwin Power Drill Installer Bit, measures 18 inches long and 1/2-inch diameter, for installing all types of small wire in homes, offices, garages, etc. A small hole in the flute (head) makes it easy to pull wires through hole in wall. Boring action is faster, smoother, cleaner in plaster, metal lath, most every material encountered in wiring installations. Bit features a longer flute section for deeper boring, and a special flute finishing process assures quick chip removal, with no clogging or binding. Irwin tools are made of only the finest materials, manufactured to exacting tolerances.


  • Ideal for installation of small wire for telephones, cable, TV, computers, and security systems
  • Constructed of premium alloy steel for boring into a variety of materials including wood, plaster, and metal lath
  • Wire hole at the tip of the bit makes it easy to pull wire through walls, ceilings, and floors


  • Brand: Irwin
  • Point Angle: 82 deg
  • Shank Type: Cylinder
  • Structure: Solid
  • Overall Length: 18 in
  • Prop65: WARNING: Cancer and Reproductive Harm -
  • Material: Alloy Steel
  • Diameter: .5 in
  • Cutting Direction: Clockwise
  • Shank Size: .37 in
  • Usage: For Telephones, Cable, TV, Computers and Security Systems