Bit Extenders | McMaster-Carr

	System of Measurement System of Measurement

Inch

in.-lbs.

Metric

	Overall Length Overall Length

	Shank Type Shank Type

	Quick- Change Hex
	Hex
	Round
	SDS Plus

	For Bit Hex Shank Size For Bit Hex Shank Size

	Hex Shank Size Hex Shank Size

	For Bit Shank Type For Bit Shank Type

	Hex
	Hex for Power Tools
	Half Moon
	HIOS

	Square Drive Size Square Drive Size

	Bit-Holding Mechanism Bit-Holding Mechanism

Magnet

Retaining Ring

Magnetic Quick-Change
Chuck

	Material Material

	For Drill Bit Shank Type For Drill Bit Shank Type

	Hex
	Quick- Change Hex
	Round
	SDS Plus

	For Drill Bit Shank Size For Drill Bit Shank Size

	Shank Size Shank Size

	Socket Type Socket Type

	Extension
	Secure-Hold Extension

	DFARS (Defense Acquisition Regulations Supplement) DFARS (Defense Acquisition Regulations Supplement)

DFARS Specialty Metals
COTS-Exempt

	Size Size

	OD OD

	RoHS (Restriction of Hazardous Substances) RoHS (Restriction of Hazardous Substances)

RoHS Compliant

RoHS Compliant with
Exemptions

	For Use With For Use With

Drills and Powered
Screwdrivers

	REACH (Registration, Evaluation, Authorization and Restriction of Chemicals) REACH (Registration, Evaluation, Authorization and Restriction of Chemicals)

REACH Compliant

	Finish Finish

Magnesium Phosphate
Coated

	For Drill Bit Size For Drill Bit Size

	For Drill Bit System of Measurement For Drill Bit System of Measurement

Inch

Wire Gauge

	Individual/Set Individual/Set

360 Products

Bit Adapters

Use hex-shank bits (also known as insert bits) in powered tools.

Secure-Hold Bit Adapters

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

Screw-Guiding Bit Adapters

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.

Tight-Clearance Bit Adapters

The head is angled 90° to drive fasteners in tight spaces. Use these adapters to hold hex-shank bits (also known as insert bits) in powered tools.

Screw-Holding Bit Adapters

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.

Flexible Bit Adapters

Bend these adapters up to 90° to access hard-to-reach fasteners. Use them to hold hex-shank bits (also known as insert bits) in powered tools.

Secure-Hold Bit Adapters for Ratchet Wrenches

Lock your bit into the adapter to prevent accidental disengagement. These adapters attach to square-drive tools.

Bit Adapters for Ratchet Wrenches

Attach these adapters to square-drive tools.

Bit Adapters for Bit Screwdrivers

Use a 4 mm bit in a bit driver that's designed for 1/4" bits.

Bit Adapters for Impact Drivers

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

Bit Adapters for Rotary Hammers

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

Bit Adapters for Impact Wrenches

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).

Torque-Measuring Bit Adapters

Eliminate the need for multiple bulky tools with these bit adapters. At less than 3 inches long, these compact adapters convert ¼” bit screwdriver handles and ¼” bits into torque screwdrivers so you can fasten to a specific torque.

Deep-Reach T-Handle Keys with Replaceable Tips

The extra-long shaft lets you access fasteners in deep recesses. To change tips, use a hex key to loosen the set screw.

Deep-Reach T-Handle Key Sets with Replaceable Tips

These assorted keys have an extra-long shaft that provides access to fasteners in deep recesses. To change tips, use a hex key to loosen the set screw.

Flexible-Shaft Bit Screwdrivers

Bend the shaft around obstructions to reach fasteners that standard and offset screwdrivers can’t.

Socket Adapters and Extensions

Electrical-Insulating Socket Extensions

Insulated to protect against accidental contact with live electrical circuits, these extensions are tested to 1,000 volts to meet IEC 60900.

Socket Extensions

Extend your socket's reach.

Nonsparking Socket Extensions

Made of aluminum-bronze, these extensions satisfy OSHA requirements that specify nonsparking tools for locations where flammable vapors and combustible residues are present.

Flexible Socket Extensions

Bend these extensions around obstructions to turn hard-to-reach fasteners.

Secure-Hold Socket Extensions

Lock your socket into the extension to prevent accidental disengagement.

Wobble Socket Extensions

The square drive has a rounded shape that allows the extension to pivot inside the socket opening and turn it from an angle.

Flexible Power Socket Extensions

Bend these extensions around obstructions to access hard-to-reach fasteners.

Impact Socket Extensions

Attach to your socket for a longer reach.

Secure-Hold Impact Socket Extensions

Lock your socket into the extension to prevent accidental disengagement.

Drill Bits

Extensions for Hex-Shank Drill Bits

Tighten the set screws to secure the drill bit in the extension.

Adjustable-Length Quick-Change
Extensions for Hex-Shank Drill Bits

Adjust these extensions to the desired length. They have a quick-change mechanism for fast bit changes.

Quick-Change Extensions for Hex-Shank Drill Bits

A quick-change mechanism allows fast bit changes.

Extensions for Round-Shank Drill Bits

Attach to the shank of a drill bit to extend its reach.

Extensions for SDS-Plus-Shank Drill Bits

SDS-Plus shanks have two deep slots and two shallow slots for use with SDS-Plus-drive rotary hammers. These extensions have a quick-change mechanism for fast bit changes.

Changeable-Size SDS-Max-Shank Masonry
Core Drill Bits for Rotary Hammers

These bits allow you to easily switch to another size by changing only the bit body. They are hollow and cut with their outside edge for drilling holes larger than 1 1/2" in diameter.

Bit Adapters

Bit Adapters

Secure-Hold Bit Adapters

Screw-Guiding Bit Adapters

Tight-Clearance Bit Adapters

Screw-Holding Bit Adapters

Flexible Bit Adapters

Secure-Hold Bit Adapters for Ratchet Wrenches

Bit Adapters for Ratchet Wrenches

Bit Adapters for Bit Screwdrivers

Bit Adapters for Impact Drivers

Bit Adapters for Rotary Hammers

Bit Adapters for Impact Wrenches

Torque-Measuring Bit Adapters

Deep-Reach T-Handle Keys with Replaceable Tips

Deep-Reach T-Handle Keys with Replaceable Tips

Deep-Reach T-Handle Key Sets with Replaceable Tips

Flexible-Shaft Bit Screwdrivers

Flexible-Shaft Bit Screwdrivers

Socket Adapters and Extensions

Electrical-Insulating Socket Extensions

Socket Extensions

Nonsparking Socket Extensions

Flexible Socket Extensions

Secure-Hold Socket Extensions

Wobble Socket Extensions

Flexible Power Socket Extensions

Impact Socket Extensions

Secure-Hold Impact Socket Extensions

Drill Bits

Extensions for Hex-Shank Drill Bits

Adjustable-Length Quick-ChangeExtensions for Hex-Shank Drill Bits

Quick-Change Extensions for Hex-Shank Drill Bits

Extensions for Round-Shank Drill Bits

Extensions for SDS-Plus-Shank Drill Bits

Changeable-Size SDS-Max-Shank MasonryCore Drill Bits for Rotary Hammers

Adjustable-Length Quick-Change
Extensions for Hex-Shank Drill Bits

Changeable-Size SDS-Max-Shank Masonry
Core Drill Bits for Rotary Hammers