Drill Bits & Insert Bits

Enhance your drilling precision with Strobels Supply's extensive range of drill bits and insert bits. Designed for durability and performance, our selection caters to a variety of industrial and DIY needs.

Featuring trusted brands like Drill America and Qualtool, known for their quality and reliability in tooling solutions, our subcategories include Carbide Burs, Counterbores, Countersinks, Cutters And Saws, Dies, Drill Bits, End Mills, Insert Bits & Bit Holders, Reamers, and Taps. Each product is crafted to deliver exceptional results, ensuring efficiency and accuracy in drilling tasks.

Explore our comprehensive drill bits and insert bits selection below, or reach out to us at orders@strobelssupply.com or [Contact Us] for any inquiries!

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  • 11/32 X 3/16 Counterbore Pilot

    Drill America

    11/32 X 3/16 Counterbore Pilot

    Counterboring Is The Enlargement Of A Portion Of A Hole That Has Previously Been Formed. If The Counterbored Portion Is Shallow (1/8" Or Less), The Operations Is Usually Known As Spot-Facing; For Example, A Flat Seat For A Bolt Head Or Nut. If The Hole...

    $5.14
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  • 11/32 X 1/8 Counterbore Pilot

    Drill America

    11/32 X 1/8 Counterbore Pilot

    Counterboring Is The Enlargement Of A Portion Of A Hole That Has Previously Been Formed. If The Counterbored Portion Is Shallow (1/8" Or Less), The Operations Is Usually Known As Spot-Facing; For Example, A Flat Seat For A Bolt Head Or Nut. If The Hole...

    $5.14
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  • 11/32 X 1/4 Counterbore Pilot

    Drill America

    11/32 X 1/4 Counterbore Pilot

    Counterboring Is The Enlargement Of A Portion Of A Hole That Has Previously Been Formed. If The Counterbored Portion Is Shallow (1/8" Or Less), The Operations Is Usually Known As Spot-Facing; For Example, A Flat Seat For A Bolt Head Or Nut. If The Hole...

    $5.14
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  • 11/16 X 5/16 Counterbore Pilot

    Drill America

    11/16 X 5/16 Counterbore Pilot

    Counterboring Is The Enlargement Of A Portion Of A Hole That Has Previously Been Formed. If The Counterbored Portion Is Shallow (1/8" Or Less), The Operations Is Usually Known As Spot-Facing; For Example, A Flat Seat For A Bolt Head Or Nut. If The Hole...

    $9.42
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  • 11/16 X 3/8 Counterbore Pilot

    Drill America

    11/16 X 3/8 Counterbore Pilot

    Counterboring Is The Enlargement Of A Portion Of A Hole That Has Previously Been Formed. If The Counterbored Portion Is Shallow (1/8" Or Less), The Operations Is Usually Known As Spot-Facing; For Example, A Flat Seat For A Bolt Head Or Nut. If The Hole...

    $9.42
    Add to Cart The item has been added
  • 11/16 X 1/4 Counterbore Pilot

    Drill America

    11/16 X 1/4 Counterbore Pilot

    Counterboring Is The Enlargement Of A Portion Of A Hole That Has Previously Been Formed. If The Counterbored Portion Is Shallow (1/8" Or Less), The Operations Is Usually Known As Spot-Facing; For Example, A Flat Seat For A Bolt Head Or Nut. If The Hole...

    $9.42
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  • 11/16 X 1/2 Counterbore Pilot

    Drill America

    11/16 X 1/2 Counterbore Pilot

    Counterboring Is The Enlargement Of A Portion Of A Hole That Has Previously Been Formed. If The Counterbored Portion Is Shallow (1/8" Or Less), The Operations Is Usually Known As Spot-Facing; For Example, A Flat Seat For A Bolt Head Or Nut. If The Hole...

    $9.42
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  • 1/8 X 3/32 Counterbore Pilot

    Drill America

    1/8 X 3/32 Counterbore Pilot

    Counterboring Is The Enlargement Of A Portion Of A Hole That Has Previously Been Formed. If The Counterbored Portion Is Shallow (1/8" Or Less), The Operations Is Usually Known As Spot-Facing; For Example, A Flat Seat For A Bolt Head Or Nut. If The Hole...

    $4.15
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  • 1/8 X 1/8 Counterbore Pilot

    Drill America

    1/8 X 1/8 Counterbore Pilot

    Counterboring Is The Enlargement Of A Portion Of A Hole That Has Previously Been Formed. If The Counterbored Portion Is Shallow (1/8" Or Less), The Operations Is Usually Known As Spot-Facing; For Example, A Flat Seat For A Bolt Head Or Nut. If The Hole...

    $4.15
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  • 1/4 X 5/32 Counterbore Pilot

    Drill America

    1/4 X 5/32 Counterbore Pilot

    Counterboring Is The Enlargement Of A Portion Of A Hole That Has Previously Been Formed. If The Counterbored Portion Is Shallow (1/8" Or Less), The Operations Is Usually Known As Spot-Facing; For Example, A Flat Seat For A Bolt Head Or Nut. If The Hole...

    $4.78
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  • 1/4 X 3/32 Counterbore Pilot

    Drill America

    1/4 X 3/32 Counterbore Pilot

    Counterboring Is The Enlargement Of A Portion Of A Hole That Has Previously Been Formed. If The Counterbored Portion Is Shallow (1/8" Or Less), The Operations Is Usually Known As Spot-Facing; For Example, A Flat Seat For A Bolt Head Or Nut. If The Hole...

    $4.78
    Add to Cart The item has been added
  • 1/4 X 3/16 Counterbore Pilot

    Drill America

    1/4 X 3/16 Counterbore Pilot

    Counterboring Is The Enlargement Of A Portion Of A Hole That Has Previously Been Formed. If The Counterbored Portion Is Shallow (1/8" Or Less), The Operations Is Usually Known As Spot-Facing; For Example, A Flat Seat For A Bolt Head Or Nut. If The Hole...

    $4.78
    Add to Cart The item has been added
  • 1/4 X 1/8 Counterbore Pilot

    Drill America

    1/4 X 1/8 Counterbore Pilot

    Counterboring Is The Enlargement Of A Portion Of A Hole That Has Previously Been Formed. If The Counterbored Portion Is Shallow (1/8" Or Less), The Operations Is Usually Known As Spot-Facing; For Example, A Flat Seat For A Bolt Head Or Nut. If The Hole...

    $4.78
    Add to Cart The item has been added
  • 1/4 X 1/4 Counterbore Pilot

    Drill America

    1/4 X 1/4 Counterbore Pilot

    Counterboring Is The Enlargement Of A Portion Of A Hole That Has Previously Been Formed. If The Counterbored Portion Is Shallow (1/8" Or Less), The Operations Is Usually Known As Spot-Facing; For Example, A Flat Seat For A Bolt Head Or Nut. If The Hole...

    $4.78
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  • 1/2 X 7/16 Counterbore Pilot

    Drill America

    1/2 X 7/16 Counterbore Pilot

    Counterboring Is The Enlargement Of A Portion Of A Hole That Has Previously Been Formed. If The Counterbored Portion Is Shallow (1/8" Or Less), The Operations Is Usually Known As Spot-Facing; For Example, A Flat Seat For A Bolt Head Or Nut. If The Hole...

    $5.77
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