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    36 Products

    Maintenance Bit Socket Sets

    Image of Product. Front orientation. Bit Sockets. Maintenance Bit Socket Sets.
    Image of Specification. Front orientation. For Torx Drives. Maintenance Bit Socket Sets.
    Image of Specification. Front orientation. For Hex Drives. Maintenance Bit Socket Sets.
    Image of Specification. Front orientation. For Tamper-Resistant Torx Drives. Maintenance Bit Socket Sets.
    Image of Specification. Front orientation. For External Torx Drives. Maintenance Bit Socket Sets.

    For

    Torx

    Drives

    For

    Hex

    Drives

    For

    Tamper-Resistant

    Torx Drives

    For

    External

    Torx

    Drives

    Image of Specification. Front orientation. For Phillips Drives.
    Image of Specification. Front orientation. For Slotted Drives.
    Image of Specification. Front orientation. For Pozidriv® Drives.

    For

    Phillips

    Drives

    For

    Slotted

    Drives

    For

    Pozidriv®

    Drives

    Keep a convenient variety of drive styles and sizes of bit sockets on hand. For use with hand-drive tools only.
    No. of
    Pieces
    Sockets Included
    Material (Socket Style)
    Container
    Type
    For Drive Style
    Each
    3/8" Square Drive
    373/8" Hex Bit Sockets (Inch): 1/8", 5/32", 3/16", 7/32", 1/4", 5/16", 3/8" (2" O'all Lg.)
    3/8" Hex Bit Sockets (Metric): 3 mm, 4 mm, 5 mm, 6 mm, 7 mm, 8 mm, 10 mm (2" O'all Lg.)
    3/8" Torx Bit Sockets: T20, T27, T30, T40, T45, T50, T55 (2" O'all Lg.)
    3/8" Tamper-Resistant Torx Bit Sockets: T15, T20, T25, T27, T30, T40, T45, T50, T55 (2" O'all Lg.)
    3/8" Phillips Bit Sockets: No. 1, No. 2, No. 3 (2" O'all Lg.)
    3/8" Slotted Bit Sockets: 4 mm, 5 mm, 6 mm (2" O'all Lg.)
    3/8" Pozidriv Bit Sockets: No. 2 (2" O'all Lg.)    		Chrome-Plated Steel (Bit Sockets)Foam TrayHex, Phillips, Pozidriv®, Slotted, Tamper-Resistant Torx, Torx000000000000000
     
    1/4", 3/8", 1/2" Square Drive
    801/4" Hex Bit Sockets (Inch): 1/8", 9/64", 5/32", 3/16", 7/32", 1/4" (1 1/2" O'all Lg.)
    1/4" Hex Bit Sockets (Metric): 2.5 mm, 3 mm, 4 mm, 5 mm (1 1/2" O'all Lg.)
    1/4” Hex Bit Sockets: T8, T10, T15, T20, T25, T27, T30 (6" O'all Lg.)
    3/8" Hex Bit Sockets (Inch): 5/16", 3/8" (1 7/8" O'all Lg.)
    3/8" Hex Bit Sockets (Metric): 6 mm, 7 mm, 8 mm, 9 mm, 10 mm (1 7/8" O'all Lg.)
    3/8" Hex Bit Sockets (Metric): 4 mm, 5 mm, 6 mm, 7 mm, 8 mm, 9 mm, 10 mm (6" O'all Lg.)
    1/2" External Torx Standard Sockets: E18, E20, E22, E24 (1 1/2 O'all Lg.)
    1/2" Hex Bit Sockets (Inch): 7/16", 1/2", 9/16", 5/8" (2" O'all Lg.)
    1/2" Hex Bit Sockets (Metric): 12 mm, 14 mm, 17 mm (2" O'all Lg.)
    1/4" Torx Bit Sockets: T8, T10, T15, T20, T25, T27, T30 (1 1/2" O'all Lg.)
    3/8" Torx Bit Sockets: T30, T40, T45, T50, T55 (1 7/8" O'all Lg.)
    3/8" Torx Bit Sockets: T40, T45, T50 (6" O'all Lg.)
    1/2" Tamper-Resistant Torx Bit Sockets: T60 (2" O'all Lg.)
    1/2" Torx Bit Sockets: T60 (2" O'all Lg.)
    1/4" External Torx Standard Sockets: E4, E5, E6, E7, E8 (1 1/8" O'all Lg.)
    1/4" Tamper-Resistant Torx Bit Sockets: T7, T8, T10, T15, T20, T25, T27, T30 (1 1/2" O'all Lg.)
    3/8" External Torx Standard Sockets: E10, E12, E14, E16 (1 1/8" O'all Lg.)
    3/8" Tamper-Resistant Torx Bit Sockets: T40, T45, T50, T55 (1 7/8" O'all Lg.)    		Chrome-Plated Steel (Bit Sockets), Black-Oxide Steel (Standard Sockets)Plastic CaseHex, Tamper-Resistant Torx, Torx, External Torx000000000000000
     

    L-Key Sets

    Image of Product. With Metal Case. Front orientation. L-Keys. L-Key Sets, Metal Case.
    Image of Product. With Plastic Pouch. Front orientation. L-Keys. L-Key Sets, Plastic Pouch.

    With Metal Case

    With

    Plastic

    Pouch

    Keep a selection of top-quality L-keys on hand, so you always have the size you need. Our L-keys are precision manufactured to tight tolerances for an exact fit and withstand high torque without bending or breaking. Made of hardened steel or stainless steel, they'll last a lifetime in your tool kit.
    Black-Oxide Steel—The dark, matte coating withstands occasional moisture.
    No. of
    Pieces
    Includes
    Material
    Container
    Type
    Each
    Torx
     
    Short Length
    14T6 Torx L-Key (1 3/4" O'all Lg.)
    T7 Torx L-Key (1 13/16" O'all Lg.)
    T8 Torx L-Key (1 15/16" O'all Lg.)
    T9 Torx L-Key (2 1/16" O'all Lg.)
    T10 Torx L-Key (2 1/8" O'all Lg.)
    T15 Torx L-Key (2 5/16" O'all Lg.)
    T20 Torx L-Key (2 7/16" O'all Lg.)
    T25 Torx L-Key (2 9/16" O'all Lg.)
    T27 Torx L-Key (2 3/4" O'all Lg.)
    T30 Torx L-Key (3" O'all Lg.)
    T40 Torx L-Key (3 1/4" O'all Lg.)
    T45 Torx L-Key (3 9/16" O'all Lg.)
    T50 Torx L-Key (4 1/16" O'all Lg.)
    T55 Torx L-Key (4 11/16" O'all Lg.)    		Black-Oxide SteelMetal Case0000000000000
    14T6 Torx L-Key (1 3/4" O'all Lg.)
    T7 Torx L-Key (1 13/16" O'all Lg.)
    T8 Torx L-Key (1 15/16" O'all Lg.)
    T9 Torx L-Key (2 1/16" O'all Lg.)
    T10 Torx L-Key (2 1/8" O'all Lg.)
    T15 Torx L-Key (2 5/16" O'all Lg.)
    T20 Torx L-Key (2 7/16" O'all Lg.)
    T25 Torx L-Key (2 9/16" O'all Lg.)
    T27 Torx L-Key (2 3/4" O'all Lg.)
    T30 Torx L-Key (3" O'all Lg.)
    T40 Torx L-Key (3 1/4" O'all Lg.)
    T45 Torx L-Key (3 9/16" O'all Lg.)
    T50 Torx L-Key (4 1/16" O'all Lg.)
    T55 Torx L-Key (4 11/16" O'all Lg.)    		Black-Oxide SteelPlastic Pouch000000000000
     
    Long Length
    14T6 Torx L-Key (3 1/16" O'all Lg.)
    T7 Torx L-Key (3 3/16" O'all Lg.)
    T8 Torx L-Key (3 1/4" O'all Lg.)
    T9 Torx L-Key (3 3/8" O'all Lg.)
    T10 Torx L-Key (3 1/2" O'all Lg.)
    T15 Torx L-Key (3 3/4" O'all Lg.)
    T20 Torx L-Key (4" O'all Lg.)
    T25 Torx L-Key (4 1/8" O'all Lg.)
    T27 Torx L-Key (4 3/8" O'all Lg.)
    T30 Torx L-Key (4 3/4" O'all Lg.)
    T40 Torx L-Key (5 3/16" O'all Lg.)
    T45 Torx L-Key (5 9/16" O'all Lg.)
    T50 Torx L-Key (6 5/16" O'all Lg.)
    T55 Torx L-Key (7 3/16" O'all Lg.)    		Black-Oxide SteelMetal Case000000000000
    14T6 Torx L-Key (3 1/16" O'all Lg.)
    T7 Torx L-Key (3 3/16" O'all Lg.)
    T8 Torx L-Key (3 1/4" O'all Lg.)
    T9 Torx L-Key (3 3/8" O'all Lg.)
    T10 Torx L-Key (3 1/2" O'all Lg.)
    T15 Torx L-Key (3 3/4" O'all Lg.)
    T20 Torx L-Key (4" O'all Lg.)
    T25 Torx L-Key (4 1/8" O'all Lg.)
    T27 Torx L-Key (4 3/8" O'all Lg.)
    T30 Torx L-Key (4 3/4" O'all Lg.)
    T40 Torx L-Key (5 3/16" O'all Lg.)
    T45 Torx L-Key (5 9/16" O'all Lg.)
    T50 Torx L-Key (6 5/16" O'all Lg.)
    T55 Torx L-Key (7 3/16" O'all Lg.)    		Black-Oxide SteelPlastic Pouch000000000000
     

    Impact Tamper-Resistant Torx Bit Socket Sets

    Image of Product. Front orientation. Bit Sockets. Impact Tamper-Resistant Torx Bit Socket Sets.
    Image of Specification. Front orientation. For Tamper-Resistant Torx Drives.

    For

    Tamper-Resistant

    Torx Drives

    The hole in the middle of these bits fits the security pin in tamper-resistant Torx screws. Also known as pin-in Torx bits. These sockets are sturdier and have more give than manual-drive sockets, so they'll withstand the high torque and force of impact tools.
    No. of
    Pieces
    Sockets Included
    Overall Lg.
    Material
    For Drive Style
    Each
    1/4", 3/8", 1/2" Square Drive
    121/2" Square Drive Size: T60 (3" O'all Lg.)
    1/4" Square Drive Size: T10, T15, T20, T25, T27, T30 (1 3/8" O'all Lg.)
    3/8" Square Drive Size: T40, T45, T47, T50, T55 (2" O'all Lg.)    		1 3/8" to 3"Black-Oxide SteelTamper-Resistant Torx
    		00000000000000
     

    Torx Bit Socket Sets

    Image of Product. Front orientation. Bit Sockets. Torx Bit Socket Sets.
    Image of Specification. Front orientation. For Torx Drives.

    For

    Torx

    Drives

    These sockets are not for use with impact or power tools.
    No. of
    Pieces
    Sockets Included
    Overall Lg.
    Tip
    Style
    Material
    For Drive
    Style
    Each
    1/4", 3/8" Square Drive
    121/4" Square Drive Size: T10, T15, T20, T25, T27, T30 (1 1/2" O'all Lg.
    3/8" Square Drive Size: T40, T45, T47, T50, T55, T60 (2" O'all Lg.)    		1 1/2" to 2"StraightChrome-Plated SteelTorx
    		0000000000000
     
    1/2" Square Drive
    5T40, T45, T50, T55, T60 (2 7/16" O'all Lg.)2 7/16"StraightChrome-Plated SteelTorx
    		000000000000
     
    1/4", 3/8", 1/2" Square Drive
    121/2" Square Drive Size: T60 (15/16" O'all Lg.)
    1/4" Square Drive Size: T10, T15, T20, T25, T27, T30 (1/2" O'all Lg.)
    3/8" Square Drive Size: T40 (1/2" O'all Lg.), T45, T47, T50 (11/16" O'all Lg.), T55 (3/4" O'all Lg.)    		1/2" to 15/16"StraightChrome-Plated SteelTorx
    		0000000000000
     

    L-Keys

    Image of Product. Front orientation. L-Keys. L-Keys.
    The highest quality L-keys you can buy for tightening and loosening screws. Our L-keys are precision manufactured to tight tolerances for an exact fit and withstand high torque without bending or breaking. Made of hardened steel or stainless steel, they'll last a lifetime in your tool kit.
    Black-Oxide Steel—The dark, matte coating withstands occasional moisture.
    Black Phosphate-Coated Steel—Paint adheres evenly to the surface of these L-keys, so you can add your own finish. The dark, matte coating resists rust in most wet and outdoor applications. However, it won't hold up to salt water and chemicals.
    Length
    Each
    Package
    Drive
    Size
    Overall
    Long
    Leg
    Short
    Leg
    Each
    Pkg.
    Qty.
    Pkg.
    Torx
     
    Black-Oxide Steel
    T557 3/16"6 3/4"1 7/16"00000000000025000000000000000
     
    Black Phosphate-Coated Steel
    T554 3/16"3 13/16"1 3/8"00000000000100000000000000
     
    Tamper-Resistant Torx
     
    Black-Oxide Steel
    T557"6 3/4"1 3/8"000000000000025000000000000000
     

    Torx Bit Sets

    Image of Product. Hex Shank. Front orientation. Screwdriver Bits. Torx Bit Sets, For Hand Tools.

    Hex Shank

    Get a grip with less slip. The bits in these sets have a six-lobe shape that grips fasteners so they won't slip and damage the drive. Also known as star bits.
    Hex Shank—Also known as insert bits, these snap into hand tools. If you want to use them with power tools, attach a bit adapter (not included).
    Steel—Best for dry environments, since moisture will cause these bits to rust.
    No. of
    Pieces
    Components
    Included
    Bits Included
    Adapters Included
    Material
    Container
    Type
    Each
    For Hand Tools
     
    1/4" Hex Shank Size
    231 Adapter
    22 Bits    		Torx: T5, T6, T7, T8, T9 (1" O'all Lg.)—1 ea.
    Torx: T10, T15, T20, T25, T27, T30, T40 (1" O'all Lg.)—2 ea.
    Torx: T45, T50, T55 (1 3/8" O'all Lg.)—1 ea.    		2 3/8" Lg. Bit Adapter for Power ToolsSteelPlastic Caddy0000000000000
     

    Impact Torx Bit Socket Sets

    Image of Product. Front orientation. Bit Sockets. Impact Torx Bit Socket Sets, Plastic Case.
    Image of Product. Bottom orientation. Bit Sockets. Impact Torx Bit Socket Sets, Metal Clip Rail.
    Image of Specification. Front orientation. For Torx Drives.

    Plastic Case

    Metal Clip Rail

    For

    Torx

    Drives

    The Torx bit sockets in these sets fasten Torx screws often used in vehicles, bicycles, and electronics. Also known as star drives. These sockets are sturdier and have more give than manual-drive sockets, so they'll withstand the high torque and force of impact tools. You can use these bit sockets to drive fasteners with a Torx Plus drive style, but they won't grip as well.
    No. of
    Pieces
    Sockets Included
    Overall Lg.
    Material
    Container Type
    For Drive
    Style
    Each
    3/8" Square Drive
    9T20, T25, T27, T30, T40, T45, T47, T50, T55 (1 25/32" O'all Lg.)1 25/32"Black Magnesium Phosphate-Coated SteelPlastic CaseTorx
    		0000000000000
     
    1/2" Square Drive
    8T30, T40, T45, T47, T50, T55, T60, T70 (3 1/16" O'all Lg.)3 1/16"Black Magnesium Phosphate-Coated SteelPlastic CaseTorx
    		000000000000
     
    1/4", 3/8", 1/2" Square Drive
    121/2" Square Drive Size: T60 (3 1/16" O'all Lg.)
    1/4" Square Drive Size: T10, T15, T20, T25, T27, T30 (31/32" O'all Lg.)
    3/8" Square Drive Size: T40, T45, T47, T50, T55 (1 25/32" O'all Lg.)    		31/32" to 3 1/16"Black Magnesium Phosphate-Coated SteelMetal Clip RailTorx
    		000000000000
     

    Easy-Align Ball-Tip L-Keys

    Image of ProductInUse. Front orientation. Contains Annotated. Easy-Align Ball-Tip L-Keys.
    Image of Product. Front orientation. L-Keys. Easy-Align Ball-Tip L-Keys.
    Turn screws at an angle when you can't access them head on. These L-keys have a ball tip on the long leg that engages the drive with less contact than a straight tip. They're handy for corners and tightly-packed areas, such as control panels and junction boxes. However, ball tips don't grip as tightly as straight tips and may strip the drive of the fastener if you crank them too hard. These L-keys are precision manufactured to tight tolerances. Made of high-quality hardened steel or stainless steel, they'll last a lifetime in your tool kit.
    Black Phosphate-Coated Steel—Paint adheres evenly to the surface of these L-keys, so you can add your own finish. The dark, matte coating resists rust in most wet and outdoor applications. However, it won't hold up to salt water and chemicals.
    Length
    Drive
    Size
    Overall
    Long
    Leg
    Short
    Leg
    Max. Access
    Angle
    Each
    Torx
     
    Black Phosphate-Coated Steel
    T557 3/16"6 3/4"1 3/8"20°00000000000000
     

    T-Handle Keys

    Image of Product. Front orientation. T-Handle Keys. T-Handle Keys, Cushion Grip.

    Cushion Grip

    Crank screws in large, heavy duty machinery, such as engines and CNC mills. A wide handle gives you maximum leverage, and a long shaft reaches into deep pockets. The shaft is permanently bonded to the handle for a secure hold that won't break under high torque. To prevent slipping, these T-handle keys are precision manufactured to tight tolerances for an exact fit. They're made of hardened steel or stainless steel to last a lifetime in your tool kit.
    Phosphate-Coated Steel—The dark, matte coating resists rust in most wet and outdoor applications. However, it won't hold up to salt water and chemicals.
    Cushion Grip—Avoid sore, blistered fingers when completing lengthy projects. These handles have a plastic coating that absorbs pressure for extra comfort.
    Long
    Drive
    Size
    Grip
    Style
    Overall
    Lg.
    Each
    Torx
     
    Phosphate-Coated Steel
    T55Cushion8 3/4"0000000000000
     

    Tamper-Resistant Torx Bit Socket Sets

    Image of Product. Front orientation. Bit Sockets. Tamper-Resistant Torx Bit Socket Sets.
    Image of Specification. Front orientation. For Tamper-Resistant Torx Drives.

    For

    Tamper-Resistant

    Torx Drives

    These sockets are also known as pin-in-Torx bits.
    No. of
    Pieces
    Sockets Included
    Overall Lg.
    Material
    For Drive Style
    Each
    1/4", 3/8", 1/2" Square Drive
    131/2" Square Drive Size: T60 (2 1/2" O'all Lg.)
    1/4" Square Drive Size: T7, T8, T10, T15, T20, T25, T27, T30 (1 9/16" O'all Lg.)
    3/8" Square Drive Size: T40, T45, T50 (1 7/8" O'all Lg.), T55 (2" O'all Lg.)    		1 9/16" to 2 1/2"Chrome-Plated SteelTamper-Resistant Torx
    		000000000000000
     

    Impact Torx Bit Sockets

    Image of Product. Top orientation. Bit Sockets. Impact Torx Bit Sockets .
    Image of Specification. Front orientation. For Torx Drives.

    For

    Torx

    Drives

    These sockets fasten Torx screws often used in vehicles, bicycles, and electronics. Also known as star drives. They’re sturdier and have more give than manual-drive sockets, so they'll withstand the high torque and force of impact tools. You can use these bit sockets to drive fasteners with a Torx Plus drive style, but they won't grip as well.
    Drive
    Size
    Overall
    Lg.
    Material
    Bit
    Replaceable
    For Drive
    Style
    Each
    3/8" Square Drive
    T551 5/8"Black-Oxide SteelNoTorx
    		000000000000
     
    1/2" Square Drive
    T553 1/8"Black-Oxide SteelNoTorx
    		000000000000
     

    Long-Reach Impact Torx Bit Sockets

    Image of Product. Bottom orientation. Bit Sockets. Long-Reach Impact Torx Bit Sockets .
    Image of Specification. Front orientation. For Torx Drives.
    Image of Product. Bottom orientation. Socket Retaining Rings. Long-Reach Impact Torx Bit Sockets .

    For

    Torx

    Drives

    Retaining

    Rings

    Extra-long bits help you access hard-to-reach fasteners. These sockets are sturdier and have more give than manual-drive sockets, so they'll withstand the high torque and force of impact tools. Torx bit sockets fasten Torx screws often used in vehicles, bicycles, and electronics. Also known as star drives. You can use these bit sockets to drive fasteners with a Torx Plus drive style, but they won't grip as well.
    These sockets require a locking retainer. Use with an impact wrench that has a pin-style socket retainer, or use a socket retaining ring with tools that have a hole- or hole-and-ring style socket retainer.
    Bit Sockets
    Retaining Rings
    Drive
    Size
    Overall
    Lg.
    Material
    Bit
    Replaceable
    For Drive
    Style
    Each
    Pkg.
    Qty.
    Pkg.
    3/8" Square Drive
    T555 7/8"Black Oil-Coated SteelNoTorx
    		00000000000005000000000000
     

    Torx Bits

    Image of Product. Hex Shank. Front orientation. Screwdriver Bits. Torx Bits, For Hand Tools.

    Hex Shank

    Get a grip with less slip. These bits have a six-lobe shape that grips fasteners so they won't slip and damage the drive. Also known as star bits.
    Hex Shank—Also known as insert bits, these snap into hand tools. If you want to use them with power tools, attach a bit adapter (not included).
    Steel—Best for dry environments, since moisture will cause these bits to rust.
    Drive
    Size
    Overall
    Lg.
    Material
    Each
    For Hand Tools
     
    1/4" Hex Shank Size
    T551 3/8"Steel000000000000
     
    5/16" Hex Shank Size
    T551 1/4"Steel00000000000
     

    Torx Bit Sockets

    Image of Product. Front orientation. Bit Sockets. Torx Bit Sockets.
    Image of Specification. Front orientation. For Torx Drives.

    For

    Torx

    Drives

    Bit Sockets
    Replacement
    Socket Bits
    Drive
    Size
    Overall
    Lg.
    Material
    Bit
    Replaceable
    For Drive
    Style
    Each
    Each
    3/8" Square Drive
    T552 7/64"Chrome-Plated SteelNoTorx
    		0000000000000———0
     
    1/2" Square Drive
    T552 1/4"Chrome-Plated SteelNoTorx
    		0000000000000000000000000
     

    Ball-Tip Screwdrivers

    Image of ProductInUse. Front orientation. Contains Annotated. Ball-Tip Screwdrivers.
    Image of Product. Front orientation. Screwdrivers. Ball-Tip Screwdrivers.
    Turn screws at an angle when you can't access them head on. These screwdrivers have a ball tip that engages the drive with less contact than a straight tip. They're handy for reaching screws in corners and underneath machinery. However, ball tips don't grip as tightly as straight tips and may strip threads if you crank them too hard.
    Ultra Grip—Designed for maximum comfort and control. The soft plastic coating and contoured shape reduce strain to prevent cramping and soreness during repetitive tasks. They also guarantee a secure grip.
    Phosphate-Coated Steel—The dark, matte coating resists rust in most wet and outdoor applications. However, it won't hold up to salt water and chemicals.
    Shaft
    Drive
    Size
    Overall
    Lg.
    Lg.
    Overall
    Wd.
    Max. Access
    Angle
    Material
    Each
    Torx
     
    Ultra Grip
    T5511 3/4"6 13/16"7/16"20°Phosphate-Coated Steel00000000000000
     

    Tamper-Resistant Torx Bit Sockets

    Image of Product. Front orientation. Bit Sockets. Tamper-Resistant Torx Bit Sockets .
    Image of Specification. Front orientation. For Tamper-Resistant Torx Drives.

    For

    Tamper-Resistant

    Torx Drives

    These sockets are also known as pin-in-Torx bits.
    Drive
    Size
    Overall
    Lg.
    Material
    Bit
    Replaceable
    For Drive Style
    Each
    3/8" Square Drive
    T552"Chrome-Plated SteelNoTamper-Resistant Torx
    		00000000000000
     

    Tamper-Resistant Torx Bits

    Image of Product. Hex Shank. Front orientation. Screwdriver Bits. Tamper-Resistant Torx Bits, For Hand Tools.

    Hex Shank

    Image of Product. Quick-Change Hex Shank. Front orientation. Screwdriver Bits. Tamper-Resistant Torx Bits, For Power Tools.

    Quick-Change Hex Shank

    These bits fit around the security pin to turn tamper-resistant Torx screws. Use them to unlock electronic enclosures and other access-controlled equipment. Their six lobes withstand high pressure without slipping and stripping the drive. Also known as pin-in-Torx bits.
    Hex Shank—Also known as insert bits, these snap into hand tools. If you want to use them with power tools, attach a bit adapter (not included).
    Quick-Change Hex Shank—Lock these bits directly into power tools. They won't wobble as much as bits paired with an adapter, so they are the best choice for high-precision tasks.
    Steel—Best for dry environments, since moisture will cause these bits to rust.
    Drive
    Size
    Overall
    Lg.
    Material
    Each
    For Hand Tools
     
    5/16" Hex Shank Size
    T551 1/4"Steel0000000000000
     
    For Power Tools
     
    1/4" Quick-Change Hex Shank Size
    T556"Steel000000000000
     
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