What is the purpose of this Wiha adapter?

This adapter allows 4 mm micro-bits to be used in standard 1/4" bit holders designed for C6.3 bits.

What drive sizes does this bit adapter feature?

It features an external 1/4" hexagon drive and an internal 4 mm hexagon drive receiver.

What is the length of this adapter?

The overall length of the adapter is 25 mm.

Which bit style fits inside this adapter?

The internal fitting is designed for shape C4 (4 mm) micro-bits.

WIHA 7103 4MM 7103 adapter 1/4" for MicroBits shape 4 mm - 39964

Name: WIHA 7103 4MM 7103 adapter 1/4" for MicroBits shape 4 mm - 39964
Brand: WIHA
SKU: 08073111
Price: 8.37 EUR
Availability: PreOrder

Supplier number: WIHA 39964 | EAN 4010995399641

8.37 tax incl.

€6.92 excl. VAT (incl. all environmental contributions)

On order: delivered from 19/10/2026

Ordered before 20:00 - delivered as of 19/10/2026
Shipping costs €11.99 VAT included | Free shipping for orders over a total amount of 125 euros
Delivery by DHL

✆ Talk to a specialist

Expand your precision toolkit with Wiha

Practical benefits

Fit microbits in standard holders: You can effortlessly use 4 mm C4 microbits in any standard 1/4" bit holder.
Secure magnetic hold: The integrated magnet keeps microbits firmly seated so you work with maximum stability and control.
Compact 25 mm design: With an overall length of 25 mm, you easily access confined and hard-to-reach fastening points.

In a nutshell

The right choise for

With the Wiha 7103 adapter, you can effortlessly use 4 mm C4 micro-bits in any standard 1/4" bit holder designed for C6.3 bits. This eliminates the need for separate precision screwdriver handles and lets you transition smoothly between standard fastening tasks and delicate repairs on electronics, smartphones, or fine mechanics. The integrated magnet keeps small bits firmly seated for wobble-free accuracy and stability. With its compact 25 mm overall length, you maintain full control in tight spaces.

Product information FAQ

€8.37

tax incl.

Key features according to our expert

Length: 25 mm
Drive profile size (bit): 1/4"
Blade thickness: Not applicable
Bit profile: HEX 1/4"

Product description

Product dimensions: 25 x 6 x 7 mm (LxWxD)
Application: Adapter 7103 with magnet allows MicroBits to be used in all normal bit holders for C6.3 Bits.
Bits: Reduced, over-tightened profile.
Standards: for bits DIN 3126, ISO 1173, shape C4
DIN 3126, ISO 1173, Style E6,3

All Features

Length: 25 mm
Drive profile size (bit): 1/4"
Blade thickness: Not applicable
Bit profile: HEX 1/4"
Esd article: No
Overall length (mm): 25 mm
Internal hexagon (mm): 4.0 mm
Tool for electrics: No
With battery / rechargeable battery: No
Hexagon head (inch): 1/4"
Self service - packing: No

Brand WIHA
08073111
EAN 4010995399641
Supplier number WIHA 39964

Frequently asked questions about this product

Answered by specialists

What is the purpose of this Wiha adapter?: This adapter allows 4 mm micro-bits to be used in standard 1/4" bit holders designed for C6.3 bits.
What drive sizes does this bit adapter feature?: It features an external 1/4" hexagon drive and an internal 4 mm hexagon drive receiver.
What is the length of this adapter?: The overall length of the adapter is 25 mm.
Which bit style fits inside this adapter?: The internal fitting is designed for shape C4 (4 mm) micro-bits.