Snappy, Flat Bottom Counterbore With Drill Bits (3 Variants)
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Drill a pilot hole and counterbore a flat bottomed hole in one step. Perfect for lag screws, lag bolts, washer head screws, T-nuts & more.
3-Flute Flat Bottom Counterbore, with TiN coated twist drill
|Drive Shank||1/4" Hex||1/4" Hex||1/4" Hex|