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Irwin 1-1/8" x 18" Long Ship Auger Bit

Brand: Irwin Mfg#: 47418
Product#: 17347418
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Irwin Long Nail Cutting Heavy Duty Wood Ship Auger Bit, 1.125 in Diameter, Hollow Center Flute, 12 in Flute Length, 17 in Overall Length, 1 Flute, 0.4375 in Shank, Hexagonal Shank, Screw+Cutter Point


  • Full length heat treatment guards against bending in heavy duty applications and strengthens the twist where the greatest strain occurs
  • Nail cutting
  • Wide lands help keep bit straight as it bores
  • Medium fast screw point ideal for general woodboring applications. Bit can be resharpened
  • Single cutter and side lip effortlessly bores holes in wood where nails may be encountered. Cuts through nails without damaging the bit
  • Hollow center flutes clear chips quickly out of holes


  • Brand: Irwin
  • Shank Size: 0.4375 in
  • Point Shape: Screw+Cutter
  • Cutting Direction: Clockwise
  • Number of Flutes: 1
  • Flute Type: Hollow Center
  • Point Type: Medium-Fast Screw
  • Overall Length: 17 in
  • Diameter: 1.125 in
  • Material: Carbon Steel
  • Flute Length: 12 in
  • Shank Type: Hexagonal