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Irwin Speedbor 15/16" x 7-1/2" Short Auger Bit

Brand: Irwin Mfg#: 49915
Product#: 17349915
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Speedbor Short Wood Auger Bit, 0.9375 in Diameter, Solid Center Flute, 4.5 in Flute Length, 7.5 in Overall Length, 1 Flute, 0.3125 in Shank, Hexagonal Shank, Screw+Spur+Cutter Point, Coarse Screw Point, Solid Structure


  • Solid center design provides extra rigidity while boring
  • Coarse screw point provides fast boring in hard and soft woods
  • Wide lands keep the bit straight as it bores through the hole
  • Single spur cutting edge scribes the circumference of the hole for a smoother finish
  • The flutes are ground behind the lands to funnel chips to the inside of the bit and away from the outside diameter, producing a faster, cleaner cut
  • Full length heat treated bit guards against bending in heavy duty applications and strengthens the twist where the greatest strain occurs


  • Brand: Irwin
  • Product Line: Speedbor
  • Diameter: 0.9375 in
  • Shank Type: Hexagonal
  • Number of Flutes: 1
  • Flute Type: Solid Center
  • Material: Carbon Steel
  • Structure: Solid
  • Point Shape: Screw+Spur+Cutter
  • Cutting Direction: Clockwise
  • Flute Length: 4.5 in
  • Shank Size: 0.3125 in
  • Overall Length: 7.5 in
  • Point Type: Coarse Screw