TWSBI DIAMOND 580 NIB (EF, F, M, B, Stub) Size:EF you will permanently alter the

you will permanently alter the tip

Multi-functional pockets for flexible use (5):

timeless design

They make a fantastic travel organiser

TWSBI DIAMOND 580 NIB (EF, F, M, B, Stub) Size:EF you will permanently alter theSpare Nib Sets for Diamond 580 fountain pen Choice: EF, F, M, B, Stub1. 1 Will fit the previous generation 540 and 530 fountain pens. Easy holder case for storage when not in use. Quick and Simple changes between nibs. No hassle. A quick no brainer guide in choosing nib sizes in an overly complicated fountain pen world: If you write small, go with an EF For the normal writer, F is the most popular If you tend to lean on a bigger font, M will be