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#1 3-7/8-In. Wire-Gauge Drill Bit, Black Oxide

Master Mechanic

UPC:

Master Mechanic, #1, 3-7/8", Black Oxide Wire Gauge Number Drill Bit, 135 Split Point Eliminates Walking & Provides Quick Starting, Surface Treated With Black Oxide Finish For Abrasion Resistance & Improved Chip Flow, Designed For Precision Hole Sizing Such As Tapping Threaded Holes, Wire Gauge Diameters Fall Between Fractional Sizes For Most Precise Hole Sizes, Taps Through Sizes 1/4-28 Require The Use Of Wire Gauge Bits, Carded.

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