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Irwin Tools 42936 4-Inch Extension Bore
Brad Point to Start Holes Cleanly
Sharp cutting edge for smooth holes
Reduced shank fits 3/8-Inch and larger drills and drill presses
manufactured to exacting tolerances
Produces Flat Bottom Holes
The Irwin Tools 42936 4-Inch Extension bores precision holes at any angle, features a brad point to start the bit cleanly, even on uneven surfaces and extra sharp cutting edges to drill smooth, flat-bottomed holes. The bit has a reduced shank to fit 3/8-Inch drills and drill presses. Irwin tools are made of only the finest materials, manufactured to exacting tolerances.