I particularly like the Brause Index nib for its shape. Perhaps you can tell by the writing that the nib is not flexible at all. Therefore you just keep a thin line.
Suitable nib holders: all straight pen holders and Nikko G Oblique holders.
Price per piece.
Shipping costs NL&BE: €4.95 & Free shipping when you spend €50
Shipping costs DE: €6.95 & Free shipping when you spend €100.
(for orders under €10, shipping costs are €7.95 (BE €9.95))