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M.K. Morse Master Cobalt 1-1/8" Bi-Metal Hole Saw

Brand: M.K. Morse Mfg#: 170185
Product#: 165AV18
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Premium line of professional quality bi-metal hole saws feature an M3 high-speed steel cutting edge, electron beam welded to a tough steel backer. Caps stand up to abuse and punishment, yet are lighter and easier to use than those of competitors. Cutting depth is 1-1/2 in (38mm). Arbor required.


  • Better tooth match for better chip clearance and smoother cutting
  • Positive rake teeth provides better chip clearance
  • Reinforced tooth flank makes teeth stronger for longer life and resistance to tooth strip page
  • Expanded gullets allow for faster cutting and increased blade life
  • Requires a separate arbor
  • Variable pitch teeth reduces friction and heat


  • Brand: M.K. Morse
  • Product Line: Master Cobalt
  • Applicable Materials: Mild Machinable Metals, Stainless Steel Alloy, Nail Embedded Wood, Plastics, Wood
  • Arbor Hole: 0.5 in
  • Arbor Thread: 20 tpi
  • Use Arbor: M24, M34
  • Body Material: M3 High Speed Steel
  • Cutting Edge Material: Cobalt
  • Cutting Depth: 1.5 in
  • Diameter: 1.125 in
  • Tooth Pattern: Positive Rake, Variable Pitch
  • Type: Bi-Metal
  • Special Features: 1.875 in Deep Cut Depth, 1 in Pipe Tap, 0.75 in Pipe Entrance
  • Usage: For General Contractor Cutting Application