What is the Wera 780 B/1 adaptor used for?

It allows you to use standard 1/4" hex bits with ratchets or power tools featuring a 3/8" square drive.

What are the drive sizes of this adaptor?

It features a 3/8" female square drive and a 1/4" female hexagon bit holder.

What is the overall length of the adaptor?

The adaptor has an overall length of 30 mm.

Is this adaptor magnetic?

No, this adaptor is not magnetic.

Does this adaptor feature a locking mechanism?

No, this adaptor does not have a locking mechanism.

WERA 780 B adapter with 3/8" drive, 1/4" x 30 mm - 05042655001

Name: WERA 780 B adapter with 3/8" drive, 1/4" x 30 mm - 05042655001
Brand: WERA
SKU: 87010096
Price: 12.8 EUR
Availability: InStock

Supplier number: WERA 05042655001 | EAN 4013288007971

Recommended Retail Price €28.06

12.80 tax incl.

€10.58 excl. VAT (incl. all environmental contributions)

On stock - immediately available | we have 2 products in stock.

Ordered before 20:00 - delivered tomorrow 03/10/2026
Shipping costs €11.99 VAT included | Free shipping for orders over a total amount of 125 euros
Delivery by DHL

✆ Talk to a specialist

Seamless conversion for standard hex bits

Practical benefits

Versatile connection for hex bits: The Wera adaptor lets you quickly attach standard 1/4" hex bits to ratchets and drivers equipped with a 3/8" square drive.
Secure retention during fastening: Featuring a ball stop groove, the adaptor locks firmly onto your drive tool to prevent slipping during intense fastening tasks.
Compact profile for tight spots: A short 30 mm body allows you to work comfortably and maintain full access in restricted or recessed areas.

In a nutshell

The right choise for

The Wera 780 B/1 adaptor allows you to use standard 1/4" hex bits directly with ratchets, torque wrenches, or drivers featuring a 3/8" female square drive. This eliminates the need to carry separate screwdrivers when working with your 3/8" socket set. Equipped with a ball stop groove, the adaptor connects securely to your drive tool for stable and controlled fastening. Its short overall length of 30 mm gives you full access to fasteners in restricted mechanical spaces. It is a practical addition to your tool set that maximizes versatility during maintenance, automotive, and assembly jobs.

Product information FAQ

€12.80

In stock - tax incl.

Key features according to our expert

Bit holder size: 1/4 inch
Connection type (machine): Internal square
With lock: No
Magnetic: No
Length: 30
Connection size (machine): 3/8"

Scope of delivery

780 B 3/8" Adaptor, 780 B/1 x 1/4" x 30 mm

Product description

Adaptor from square to hexagonal. Suitable for the attachment of bits with 1/4" hexagon drive as per DIN ISO 1173-C 6.3. Drive: 3/8" square.

3/8" adaptor
Suitable for bits with 1/4" hexagon drive (Wera connecting series 1)
3/8" square socket drive
Equipped with ball stop groove

Application

Suitable for 1/4" DIN ISO 1173-C 6,3 and 5/16" DIN ISO 1173-C 8 hexagon insert bits and Wera Series 1 and 2

Drive

3/8" female square

Features and benefits

All Features

Bit holder size: 1/4 inch
Connection type (machine): Internal square
With lock: No
Magnetic: No
Length: 30
Connection size (machine): 3/8"

Brand WERA
87010096
EAN 4013288007971
Supplier number WERA 05042655001

Frequently asked questions about this product

Answered by specialists

What is the Wera 780 B/1 adaptor used for?: It allows you to use standard 1/4" hex bits with ratchets or power tools featuring a 3/8" square drive.
What are the drive sizes of this adaptor?: It features a 3/8" female square drive and a 1/4" female hexagon bit holder.
What is the overall length of the adaptor?: The adaptor has an overall length of 30 mm.
Is this adaptor magnetic?: No, this adaptor is not magnetic.
Does this adaptor feature a locking mechanism?: No, this adaptor does not have a locking mechanism.