4 1/2 Bi-Metal M.K. Morse Hole Saw (177726)

4-1/2 Diameter
4-1/2 Pipe Tap
75 Recommended RPM

Variable depth gullets provide more efficient chip clearance
4/6 Variable pitch teeth for reduced noise and improved performance
Electron beam weld for stronger, longer lasting teeth
Bi-metal construction for toughness and long life - 4 1/2 Irwin

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