Help Please What socket type do Audi use

[SRRAE]

I'm really struggling to get the replacement fan belt on with the car front of the car still attached. I know there are many Torx sockets but there are some like Torx but have may more teeth than a Torx.

What are these sockets called?

 

[tech838]

They're XZN / triple square spline bits

 

[SRRAE]

They're XZN / triple square spline bits

Thanks.

 

[A4B82.0tfsi-12]

Or sometimes in12, since it's 12 spikes.

 

[AudiLeon]

Take the under tray off and the snub mount bar. Makes life easier with a mate above helping you keep tension as you feed it round.