TA52 3 1/4" Hole Saw (for wood and metal)Made in the U.S.A.

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TA52 MORSE 3 1/4" Hole Saw (for wood and metal)Made in the U.S.A. The 105rpm mild steel,70rpm cast iron. THE REAL McCoy bi-metal hole saw offers users the best possible combination of hole saw performance,conveinience and economy. It's two principal advantages are a patented, permanently attached arbor in all 51 sizes(9/16" to 6") and a 4-6 teeth per inch variable pitch.M-3 bi-metal tooth design. These features combine to offer users substantial savings in labor costs and tool costs.