Question about Proxxon Gear rim drill chuck

Proxxon Mandrin de perceuse industrielle (10 mm)

ici le 24 020 pour la poupée mobile PD250/e

https://www.proxxon.com/fr...
https://www.proxxon.com/fr...
Industrial chuck with CM 1
For the sliding headstock of the PD 250/E lathe. Clamping up to 10 mm.
article N° NO 24 020

They are different for the sliding headstock: the chuck shank is tapered.

Yours faithfully