Minimal but cylindrical

This is my favourite everyday pen - ii is refillable and it’s nib can be changed. It fits beautifully in any bag, no matter how small the bag and significantly writes well!
The problem I had with it is that being on the small size, it can disappear into a bag but my lovely friend came up with a solution - a bright pink leather case which she kindly made for me.
And it’s cyclindrical - thanks for hosting MM stuj