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Twsbi Classic is a slimmer fountain pen from TWSBI that shares many features from sister products the Diamond Mini and Diamond 580 fountain pens. Now with re-designed piston knob that allows the cap to be posted.

The TWSBI Classic fountain pen features a piston filing mechanism to provide large ink capacity and the solid colour barrel includes a transparent ink window so you can see at a glance when your pen is low on ink.

Like other TWSBI fountain pens, the Twisbi classic fountain pen it is completely user serviceable and the gift box comes complete with wrench and silicone grease for servicing the piston mechanism (the tool is compatible with other TWSBI fountain pens).

The squared-off barrel profile prevents the pen from rolling when placed on a flat surface. The TWSBI Classic shares its German made Jowo nib with the TWSBI mini but uses a different nib/feed collar. The nib sizes available are: Extra Fine, Fine, Medium, Broad and Stub 1.1


Twsbi Classic Fountain Pen Technical Specs:

126mm long

137mm long when closed

163mm long when posted

total weight: 24g
After 40 plus years as an OEM manufacturer for different global brands, Ta Shin Precision decided to start selling under their own brand, and thus TWSBI was born.

TaShin Precision has over 40 years of experience in manufacturing with plastics and metals. Early products ranged from toy lego parts to high end writing instruments. This knowledge trickles down into every product TWSBI has to offer.

TWSBI have produced pens for other manufacturers for the past 40 years. They decided to make their own in 2009, and the TWSBI project was born. Pens were produced and, harnessing the power of social media, were improved and refined until there is little doubt that outstanding value for money piston and plunger filler pens available today. The pens all now feature nibs from Jowo, our favourite German nib manufacturers, TWSBI have been built with the enthusiast in mind, so each pen comes with a spanned to undo the back of the pen, allowing access to the filling mechanism for cleaning the pen and, of necessary, to allow it to be lubricated with silicon grease, which is provided. This is an option – in general use you won’t need to do this, but the option is there for those who want it! There are numerous excellent videos on the web giving details on this – try the TWSBI site at www.twsbi.com/blogs/tutorials.