I have one of those, a V-slicer. I love it.
What sizes of DO’s do you have? Maybe you’ll have to split it between two?
We're good. Everything fit.
More to follow

The mandolin is a Borner. I looked it up on Amazon and it might be Swiss.
I just know I had a hard time getting it apart and I'm sure understanding the words on it might have helped, lol.