TWSBI nib units

There are 6 products.

Genuine replacement nibs for the TWSBI Diamond 530 and Diamond 540 fountain pens. A complete assembly of nib/feed/collar mounted in a transparent gripping section (sorry, other colours not yet available). These nibs are manufactured by Bock.

To replace the nib on your Diamond 530 or 540 fountain pen, empty and clean the pen then unscrew the front section from the barrel. Replace with the new nib section and gently screw in until hand tight. Replace the original nib in the canister for safe keeping.

If your pen has a coloured front section (ie not transparent) you will need to remove the nib from the section. This is very easy as it pulls straight out but make sure the o-ring stays with the nib/feed assembly. Follow the instructions provided with your pen.

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Testimonials ( 4700 )
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Review By Lev Balynskiy,
Got the packages
29-05-2020
Verified Purchase
Review By Kresimir Kuharic,
I made my first order on May 17th. On May 18th order was already in transit. On May 25th I received ...
26-05-2020
Verified Purchase
Review By Gareth Evans,
One pen was out of stock but a fancier variant was suggested arriving the next day and at same pric ...
25-05-2020
Verified Purchase