How to attach detachable shirt collars?

[PMan]

Thank you for the very practical advice. I have to do that in German, but I seem not to have found the right word combination yet.

Kragenknopf

Ah....I just tried about 15 different word combinations and nothing.....

[Nick Komiya]

Kragenknopf I think is the word for lapel pins

[saladin]

Kragenknopf I think is the word for lapel pins

I'll have a look in my button box when I get home.
I used to wear them with my military shrts
All the best
Doug