Description

Upgrade your woodworking precision with this 4PCS Countersink Drill Bit Set, specially designed for clean pilot holes and smooth countersinking in wood and plastic materials. Each bit features a high-speed steel (HSS) drill core and a durable blackened carbon steel body—built for long-lasting performance and heat resistance. The hex shank design ensures a secure fit in most power tools and hand drills, offering compatibility and convenience in a range of DIY or professional applications.

These drill bits allow you to drill pilot holes and countersink in one go, saving time and ensuring your screws sit flush every time. The depth of the countersink sleeve is adjustable using the included hex key, and the drill core can be replaced or repositioned to suit different screw lengths.

Ideal for cabinetry, hardwood, MDF, composite board, and plastic sheet installations.

Features

  • 4-in-1 Drill Bit Set – Includes sizes for #6, #8, #10, and #12 wood screws

  • Premium Materials – Drill tips made of high-speed steel (4241 HSS); countersink body made from blackened carbon steel for wear resistance

  • Hex Shank Compatibility – 1/4" (6.35 mm) hex shank fits most electric drills and impact drivers

  • Depth Adjustable – Easy-to-adjust countersink sleeve and replaceable drill core using the included hex wrench

  • Clean Finish – Simultaneously drills pilot holes and counterbores for smooth, flush screw heads

Specifications

  • Material: High-speed steel (drill tip), blackened carbon steel (countersink body)

  • Bit Sizes:
    #6 – Ø2.38mm
    #8 – Ø2.78mm
    #10 – Ø3.175mm
    #12 – Ø3.56mm

  • Shank: 6.35mm hex

  • Compatible Materials: Timber, hardwood, MDF, plastic, composite board

Package Includes

  • 4 x Countersink Drill Bits (#6, #8, #10, #12)

  • 1 x Hex Wrench

Note
Please allow slight variations in measurements due to manual sizing. Colour may vary slightly due to lighting and monitor settings.

4PCS Countersink Drill Bit Set Woodworking Pilot Hole Hex Shank Tool

Product form

$10.90 $5.99

Free pickup in our shop(s)

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    Return & ExchangeReturn & Exchange

    For products you are not satisfied with, we have a 30-day return and exchange policy. This means you
    have 30 days from receiving your item to request a return or exchange. Once we have received and examined your return, we will notify you and let you know whether to approve a refund or an exchange. lf you opt for a refund, you can then re-purchase the new product to make sure you get what you want. lf you choose an exchange, we will process it and send you the new product as soon as possible.

    Handling TimeHandling Time

    Standard delivery usually takes 2-6 business days depending on your parcel destination (8
    10 business days for western states and remote areas).
    Depending on your parcel destination, express delivery usually takes 1 - 5 business days.
    Please expect delays on holidays or during high-volume seasons.

    Description

    Upgrade your woodworking precision with this 4PCS Countersink Drill Bit Set, specially designed for clean pilot holes and smooth countersinking in wood and plastic materials. Each bit features a high-speed steel (HSS) drill core and a durable blackened carbon steel body—built for long-lasting performance and heat resistance. The hex shank design ensures a secure fit in most power tools and hand drills, offering compatibility and convenience in a range of DIY or professional applications.

    These drill bits allow you to drill pilot holes and countersink in one go, saving time and ensuring your screws sit flush every time. The depth of the countersink sleeve is adjustable using the included hex key, and the drill core can be replaced or repositioned to suit different screw lengths.

    Ideal for cabinetry, hardwood, MDF, composite board, and plastic sheet installations.

    Features

    • 4-in-1 Drill Bit Set – Includes sizes for #6, #8, #10, and #12 wood screws

    • Premium Materials – Drill tips made of high-speed steel (4241 HSS); countersink body made from blackened carbon steel for wear resistance

    • Hex Shank Compatibility – 1/4" (6.35 mm) hex shank fits most electric drills and impact drivers

    • Depth Adjustable – Easy-to-adjust countersink sleeve and replaceable drill core using the included hex wrench

    • Clean Finish – Simultaneously drills pilot holes and counterbores for smooth, flush screw heads

    Specifications

    • Material: High-speed steel (drill tip), blackened carbon steel (countersink body)

    • Bit Sizes:
      #6 – Ø2.38mm
      #8 – Ø2.78mm
      #10 – Ø3.175mm
      #12 – Ø3.56mm

    • Shank: 6.35mm hex

    • Compatible Materials: Timber, hardwood, MDF, plastic, composite board

    Package Includes

    • 4 x Countersink Drill Bits (#6, #8, #10, #12)

    • 1 x Hex Wrench

    Note
    Please allow slight variations in measurements due to manual sizing. Colour may vary slightly due to lighting and monitor settings.

    Customer Reviews

    Based on 4 reviews
    75%
    (3)
    25%
    (1)
    0%
    (0)
    0%
    (0)
    0%
    (0)
    G
    Gordon Martin

    Bits have no ground leading edge so they don't self drill into wood. Require a lot of pressure, not suitable for hand drilling. Should have leading and trailing edge just like an ordinary drill bit. My old bits work better than the new ones and they are worn out. I think manufacturing failure. They are not like that bits shown in the picture, they look correctly sharpened

    m
    mar.mama.80nofmxmtr

    Very easy to use, very convenient, works well

    m
    murf

    Great seller ++++++

    r
    redibi

    Items as described. Highly recommended

    Frequently Asked Questions

    When will my order be delivered?

    Your order will be carefully packaged and delivered to your desired location. All orders will be processed within 1 to 2 business days after receiving the order confirmation email (excluding weekends and holidays). Once your order is shipped, you will receive another notification.

    Can I return my product?

    We have a 30 day return policy, which means you have 30 days after receiving your item to request a return. For all return requests, see our refund police.

    What can I do if my item (or part of it) is damaged?

    Please check your order upon receipt and contact us immediately if the item is defective, damaged or if you have received the wrong item. Please send a photo of the item together by email. We will resolve the issue as soon as possible.

    You do not have to pay for return shipping.

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