The toughest bits available, these withstand the shock and twisting force of impact drivers.

Ribs forged into the wings of these bits grip the screw recess to reduce stripping. They're also known as ACR® bits.

A wide tip makes good contact in shallow and coated screw recesses, such as those filled with paint.

An exterior stop collar prevents fasteners from being driven too deep. Use with soft material such as drywall, wood, and fiberboard.

Protect your stainless steel screws by using a stainless steel bit. If steel flakes off a standard bit and into the recess, it can lead to rust and contamination. These bits eliminate that risk.

Strong and durable, these multipurpose bits are for use with bit screwdrivers.

When you don't have exact alignment between the fastener and the tool, the ball end allows angled entry to turn screws in hard-to-reach areas.

When you don't have exact alignment between the fastener and the bit, the ball end allows angled entry to turn screws in hard-to-reach areas. A retaining ring grips inside the recess to hold screws in place.

Strong and durable, these multipurpose bits are for use with bit screwdrivers. They are often used with power tools to install sheet metal screws.

The small-diameter shaft can access screws in narrow recessed holes.

Remove screws in hard-to-reach places. A spring-loaded sleeve guides bits onto the screw head and keeps them from slipping out.

Strong and durable, these multipurpose bits are often used with power tools to install sheet metal screws.

Less likely to crack or shatter under high torque than standard bits, these are often used with power tools to install machine screws.

The slightly tapered tip wedges into the screw recess for a secure hold. Also known as Torx-Align bits.

Protect your stainless steel screws by using a stainless steel bit. If steel flakes off a standard bit and into the recess, it can lead to rust and contamination. These bits eliminate that risk.

The toughest bits available, these withstand the shock and twisting force of impact drivers. Designed for screws with a square recess in the head, they are also known as Robertson bits.

An exterior stop collar prevents fasteners from being driven too deep. Use with soft materials such as drywall, wood, and fiberboard.

An opening at the tip accommodates the pin in the recess of tamper-resistant Torx screws. These are also known as pin-in-Torx bits.

Use with screws that have two drilled holes.

Strong and durable, these multipurpose bits are for use with bit screwdrivers.

Ribs forged into the wings of these offset-cross-shaped bits grip the screw recess to reduce stripping. They are also known as ACR® bits.

The six rounded points fit the star-shaped recess of Torx-Plus screws. These bits have a similar profile to Torx but are not recommended for use with standard Torx screws.

These bits are shaped like a 12-pointed star. They're also known as XZN bits.

The tip is shaped like an eight-pointed star.

Turn two drive styles with one reversible bit. Remove and replace to change the tip.

While screws with a square/Phillips combination drive can be turned with either a square or Phillips bit, these make the best contact so you can apply high torque without slipping and stripping the recess. They are also known as Quadrex bits.

Grip the indentations on the head of tri-groove fasteners.

An opening at the tip accommodates the pin in the recess of tamper-resistant Phillips screws. These are also known as pin-in-head Phillips bits.

Turn screws that have the tamper-resistant asymmetrical drive exclusive to McMaster-Carr.

Also known as Polydrive bits.

A three-winged tip fits triangular slotted screw recesses.

Because they make contact on the flat sides of fasteners rather than only on the corners, these magnetic bits significantly reduce slipping and stripping. They’re also known as lobular bits.

The toughest bits available, these withstand the shock and twisting force of impact drivers. A magnet holds the nut in place.

The toughest bits available, these withstand the shock and twisting force of impact drivers.

Less likely to crack or shatter under high torque than standard bits, these are often used with power tools to install machine screws.

A magnet holds the nut in place.

An opening at the tip accommodates the pin in the recess of tamper-resistant Torx screws. These are also known as pin-in-Torx bits.

Also known as Bristol bits, these have a knurled-end shank that allows finger tightening. They can also be used with the included screwdriver.

Ribs forged into the wings of these bits grip the screw recess to reduce stripping. They're also known as ACR® bits.

Designed for the fasteners used in electronics assembly, the tip of these bits has slightly sharper corners than Phillips style.

A three-winged tip fits triangular slotted screw recesses.

The six rounded points fit the star-shaped recess of Torx-Plus screws. These bits have a similar profile to Torx but are not recommended for use with standard Torx screws.

Lock your bit into the adapter to prevent accidental disengagement. These adapters hold hex-shank bits (also known as insert bits) in powered tools.

Keep bits from slipping. Insert a bit into the adapter, place a screw on the end of the bit, and slide the adapter sleeve over the screw. The sleeve retracts as the screw is driven. These adapters hold hex-shank bits (also known as insert bits) in powered tools.

A magnetic ring at the end of the adapter holds flat-head screws in place to ensure good contact between the bit and screw. Use these adapters to hold hex-shank bits (also known as insert bits) in powered tools.

Insert these adapters into your SDS-drive rotary hammer to use it with hex-shank bits (also known as insert bits).

These adapters are designed to withstand the high torque of impact drivers. They hold hex-shank bits (also known as insert bits).

Designed to withstand high torque and force, these adapters fit the square drive on impact wrenches. Use with hex-shank bits (also known as insert bits).

Store a variety of sizes and styles of bits and adapters in one compact tray.

Keep these caddies in your tool drawer or take them with you.

A ratchet mechanism turns fasteners more quickly than a standard bit driver. Insert a bit into the shaft and a magnet holds it in place.

Lock the bit into the chuck to prevent accidental disengagement.

Bits are held in place with a retaining ring or set screw rather than a magnet, so the tool won't attract loose metal parts and shavings.

LEDs light the tip so you can use these tools in dark areas.

An insulated handle and shaft protect against shock from accidental contact with live electrical circuits. These tools are tested to 1,000 volts to meet EN 60900 and IEC 60900.

When working in tight spaces, these short drivers fit where others can't. Bits have a different tip at each end and snap into the shaft, which is also a nutdriver.

These assorted shafts attach to a handle or can be used with socket wrenches and power tools. They have a ball end that allows angled entry to make good contact with the recess when a standard-tip shaft can’t.

Fit these holders directly into a lathe tool post or appropriately sized holder without the need for a tool block.

Pair these holders with a tool block for right- and left-hand mounting in a lathe.

Mount blade-style holders to a lathe tool post or turret.

Pair these holders with a tool block for right- and left-hand mounting in a lathe.

Optimized for use on steel, these inserts can run at higher cutting speeds and will last longer than inserts for multiple materials.

Heat resistant and wear resistant, these inserts cut super alloys—such as Inconel and Waspaloy—and titanium better than general use inserts.

Cut aluminum, copper, brass, and other non-ferrous materials with these premium inserts.

These inserts can cut grooves on both the outside and inside of a workpiece depending on the holder used.

These sets have five indexable turning tools with carbide inserts and a wood storage stand. When one edge of a tool's insert dulls, rotate it to use a sharp edge.

Resisting wear and fractures when cutting hardened steel, these cubic boron nitride inserts last longer than carbide inserts.

Replace clamps, screws, seats, and slotted pins in carbide insert holders.

These sets have a variety of indexable boring insert holders with carbide inserts and a wood storage stand. When one edge of a tool's insert dulls, rotate it to use a sharp edge to enlarge existing holes to precise diameters.

Pair one of these inserts with a compatible boring carbide insert holder with coolant hole.