Konig Screwdriver Identification

[Polo_Karl]

I bought this lot of Konig screwdriver and or releases. Made in West Germany. Probably overpaid, but anyway:

Anybody know what the one in the close up photos are for? I dont know what the other drivers are for but at least I understand how they could transmit torque. I am failing to see how the pictured one could transmit much torgue with a single round pin, only being not far off center. Curious what you all know/guess.

Thanks!

 

[kythri]

Is there any model information on the handle?

 

[Polo_Karl]

Nope. Just the brand name. And "Made in Western Germ Germany"

 

[Mr. Tool]

Those definitely look like "speciality tools" obviously designed and used for some sort of lab equipment or another.