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    58 Products

    Left-Hand Drill Bits

    With flutes that spiral in the opposite direction of other bits, these are primarily used to remove stripped screws. Choose a bit that’s slightly smaller than the diameter of the screw’s head. Set your power tool to rotate in reverse. Slowly drill in the center of the screw head, maintaining constant pressure. As the bit penetrates, it will catch onto the screw and reverse it out of the hole. If the screw is badly stripped, you might need to punch a starter hole. Also known as reverse-flute bits.
    Cobalt Steel Jobbers' Length
    Image of Product. Front orientation. Drill Bits. Left-Hand Drill Bits, Jobbers' Length, Spiral Flute, Round Shank.

    Spiral Flute

    Round Shank

    Image of Specification. Split. Front orientation. Contains Border. Split Point. For Metal.

    Split

    The toughness and wear resistance of cobalt steel in a length that's rigid enough for most applications. Cobalt lasts at least twice as long as high-speed steel. It can also run up to 25% faster at higher temperatures without damaging the bit on hard materials such as nickel.
    Uncoated—Polished to eject chips, these are also known as bright finish bits.
    Round Shank—The most common shank type. These fit in the chuck of drill presses and portable drills.
    Split Point—Easier to start holes and stay centered than standard-point bits.
    Shank
    Drill Bit
    Size, mm
    Decimal Size
    Equiv.
    Overall
    Lg., mm
    Max. Drilling
    Dp., mm
    Flute
    Type
    Type
    Size,
    mm
    Drill Bit
    Point Type
    No. of
    Flutes
    Specs. Met
    Each
    Uncoated
     
    Metric
    1.50.0591"4822SpiralRound1.5Split2NAS907 Type J000000000000
    2.00.0787"5125SpiralRound2Split2NAS907 Type J00000000000
    2.50.0984"6035SpiralRound2.5Split2NAS907 Type J00000000000
    3.00.1181"7041SpiralRound3Split2NAS907 Type J00000000000
    3.50.1378"7345SpiralRound3.5Split2NAS907 Type J00000000000
    4.00.1575"8354SpiralRound4Split2NAS907 Type J00000000000
    4.50.1772"8656SpiralRound4.5Split2NAS907 Type J00000000000
    5.00.1968"9262SpiralRound5Split2NAS907 Type J000000000000
    5.50.2165"9564SpiralRound5.5Split2NAS907 Type J000000000000
    6.00.2362"10270SpiralRound6Split2NAS907 Type J000000000000
    6.50.2559"10573SpiralRound6.5Split2NAS907 Type J000000000000
    7.00.2756"10573SpiralRound7Split2NAS907 Type J000000000000
    7.50.2953"11178SpiralRound7.5Split2NAS907 Type J000000000000
    8.00.315"11481SpiralRound8Split2NAS907 Type J000000000000
    8.50.3346"12187SpiralRound8.5Split2NAS907 Type J000000000000
    9.00.3543"12489SpiralRound9Split2NAS907 Type J000000000000
    9.50.374"12792SpiralRound9.5Split2NAS907 Type J000000000000
    10.00.3937"13095SpiralRound10Split2NAS907 Type J000000000000
    10.50.4134"13398SpiralRound10.5Split2NAS907 Type J000000000000
    11.00.4331"140103SpiralRound11Split2NAS907 Type J000000000000
    11.50.4528"143106SpiralRound11.5Split2NAS907 Type J000000000000
    12.00.4724"149111SpiralRound12Split2NAS907 Type J000000000000
    12.50.4921"152114SpiralRound12.5Split2NAS907 Type J000000000000
    13.00.5118"152114SpiralRound13Split2NAS907 Type J000000000000
     
    Cobalt Steel Maintenance Length
    Image of Product. Front orientation. Drill Bits. Left-Hand Drill Bits, Maintenance Length, Spiral Flute, Round Shank.

    Spiral Flute

    Round Shank

    Image of Specification. Split. Front orientation. Contains Border. Split Point. For Metal.

    Split

    Shorter than jobbers' length, these bits are more rigid for less wobble when drilling hard material. They're made of tough and wear-resistant cobalt, which lasts at least twice as long as high-speed steel. Also known as mechanics' bits.
    Titanium Nitride (TiN) Coated—Drill at higher speeds and last longer than uncoated bits, especially on tough materials like hardened steel and nickel.
    Titanium Aluminum Nitride (TiAlN) Coated—The hardest and most wear-resistant coating, especially at high temperatures. These bits are best for hard and abrasive materials, such as iron, titanium, and fiberglass.
    Uncoated—Polished to eject chips, these are also known as bright finish bits.
    Round Shank—The most common shank type. These fit in the chuck of drill presses and portable drills.
    Split Point—Easier to start holes and stay centered than standard-point bits.
    Shank
    Drill Bit
    Size
    Decimal Size
    Equiv.
    Overall
    Lg.
    Max. Drilling
    Dp.
    Flute
    Type
    Type
    Size
    Drill Bit
    Point Type
    No. of
    Flutes
    Each
    Titanium Nitride (TiN) Coated
     
    Inch
    5/64"0.0781"2"0.88"SpiralRound5/64"Split2000000000000
    7/64"0.1094"2 1/4"0.84"SpiralRound7/64"Split200000000000
    1/8"0.125"2 1/4"1.06"SpiralRound1/8"Split200000000000
    5/32"0.1563"2 5/8"1.27"SpiralRound5/32"Split200000000000
    3/16"0.1875"2 7/8"1.34"SpiralRound3/16"Split200000000000
    7/32"0.2188"3 1/8"1.42"SpiralRound7/32"Split200000000000
    1/4"0.25"3 3/8"1.63"SpiralRound1/4"Split200000000000
    5/16"0.3125"3 3/4"1.97"SpiralRound5/16"Split2000000000000
    3/8"0.375"4 1/8"2.06"SpiralRound3/8"Split2000000000000
     
    Titanium Aluminum Nitride (TiAlN) Coated
     
    Inch
    5/64"0.0781"2"0.88"SpiralRound5/64"Split200000000000
    7/64"0.1094"2 1/4"0.84"SpiralRound7/64"Split200000000000
    1/8"0.125"2 1/4"1.06"SpiralRound1/8"Split200000000000
    5/32"0.1563"2 5/8"1.27"SpiralRound5/32"Split200000000000
    3/16"0.1875"2 7/8"1.34"SpiralRound3/16"Split200000000000
    7/32"0.2188"3 1/4"1.42"SpiralRound7/32"Split200000000000
    1/4"0.25"3 3/8"1.63"SpiralRound1/4"Split200000000000
    5/16"0.3125"3 3/4"1.97"SpiralRound5/16"Split2000000000000
    3/8"0.375"4 1/8"2.06"SpiralRound3/8"Split2000000000000
     
    Uncoated
     
    Inch
    5/64"0.0781"2"0.88"SpiralRound5/64"Split200000000000
    7/64"0.1094"2 1/4"0.84"SpiralRound7/64"Split200000000000
    1/8"0.125"2 1/4"1.06"SpiralRound1/8"Split200000000000
    5/32"0.1563"2 5/8"1.27"SpiralRound5/32"Split200000000000
    3/16"0.1875"2 7/8"1.34"SpiralRound3/16"Split200000000000
    7/32"0.2188"3 1/8"1.42"SpiralRound7/32"Split200000000000
    1/4"0.25"3 3/8"1.63"SpiralRound1/4"Split200000000000
    9/32"0.2813"3 5/8"1.7"SpiralRound9/32"Split200000000000
    19/64"0.2969"3 5/8"1.87"SpiralRound19/64"Split200000000000
    5/16"0.3125"3 3/4"1.97"SpiralRound5/16"Split200000000000
    11/32"0.3438"4"1.98"SpiralRound11/32"Split2000000000000
    3/8"0.375"4 1/8"2.06"SpiralRound3/8"Split2000000000000
    13/32"0.4063"4 3/8"2.14"SpiralRound13/32"Split2000000000000
    7/16"0.4375"4 5/8"2.22"SpiralRound7/16"Split2000000000000
    15/32"0.4688"4 3/4"2.23"SpiralRound15/32"Split2000000000000
    1/2"0.5"5"2.31"SpiralRound1/2"Split2000000000000
     
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