3/8" Square Drive Size Extensions | McMaster-Carr

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189 Products

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Socket Extensions

Socket Extensions

Socket Extensions

Socket Extensions

Extend your socket's reach

Socket Extension Sets

Socket Extension Sets

Keep common extension lengths on hand to reach a variety of spots

Flexible Socket Extension Sets

Flexible Socket Extension Sets

Multiple lengths that bend to reach fasteners tucked around obstructions

Strong-Hold Socket Extension Sets

Strong-Hold Socket Extension Sets

A variety of lengths to lock onto sockets for a hold that won't disengage

Wobble Socket Extensions

Wobble Socket Extensions

The rounded male end pivots to use your tool at an angle

Strong-Hold Socket Extensions

Strong-Hold Socket Extensions

Lock onto your socket for a stronger hold than standard extensions

Wobble Socket Extension Sets

Wobble Socket Extension Sets

A variety of lengths with a rounded male end that pivots to adjust for awkward angles

Electrical Insulating Socket Extensions

Electrical Insulating Socket Extensions

Safely extend your reach when working on or near live parts

Flexible Socket Extensions

Flexible Socket Extensions

Bend to reach fasteners tucked around obstructions

Impact Socket Adapters and Extensions

Impact Socket Extensions

Impact Socket Extensions

Withstand the high torque and force of impact tools

Flex Impact Socket Extensions

Flex Impact Socket Extensions

The flex head pivots to access fasteners from an angle

Impact Socket Extension Sets

Impact Socket Extension Sets

Multiple lengths that withstand the high torque and force of impact tools

Strong-Hold Impact Socket Extensions

Strong-Hold Impact Socket Extensions

Lock onto impact sockets for a stronger hold than standard impact extensions

Strong-Hold Impact Socket Extension Sets

Strong-Hold Impact Socket Extension Sets

A variety of lengths that lock onto impact sockets without disengaging

Continuous-Use Socket Adapters and Extensions

Continuous-Use Socket Extensions

Continuous-Use Socket Extensions

Hardened to stand up to your high-volume production and assembly lines

Flexible Power Socket Extensions

Flexible Power Socket Extensions

Bend to reach fasteners behind obstructions; for use with nonimpact power tools

Other Products

Socket Adapters

Socket Adapters

Make your socket more versatile, from converting the drive to limiting torque

Bit Adapters

Connect a variety of bits to drills, powered screwdrivers, ratchet wrenches, and other turning tools

Sockets

Turn fasteners with an external drive style without slipping and damaging the drive

The quick brown fox jumped over the lazy dog. Pedestal (35" Ht. x 4" Wd. x 4" Dp.)