Diamond Mini Fountain Pen - Classic Black - Medium Nib

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  • Demonstrator style, pocket size.

    The TSWBI Diamond Mini Classic is a highly portable pocket pen. It's small and compact when capped but when you post the cap on the back of the pen you get a comfortable sized writing pen.

    The medium steel nib is ideal if you prefer a thicker line or have bigger handwriting.

    The clear resin barrel is accented by chrome trim, black cap and grip. The cap is adorned by the recognizable red TWSBI logo.

    The TWSBI Diamond Mini Classic has a built in piston filling mechanism that allows you to fill your pen by twisting the back. If used in conjunction with the Diamond 50 glass ink bottle you can easily fill your pen mess free.

    The Diamond Mini Classic will ship with free express post for all orders within Australia so this pen will arrive to you quickly.

  • TWSBI fountain pens come packaged with a wrench and silicon grease. These are not required to use and enjoy your pen. They are meant for long term maintenance by experienced fountain pen users who wish to disassemble their pen for cleaning.

    Learn how to use and care for fountain pens with our guides.

    Anatomy of a fountain pen

    Filling from a bottle


  • Brand TWSBI
    Type Fountain pen
    Colour Black and clear
    Body Material Resin
    Trim Chrome
    Cap Type Screw cap
    Postable Cap Yes
    Cartridge / Converter Type Built in piston filler
    Cartridge Doesn't accept ink cartridges
    Ink Converter Built in piston filler
    Nib Width Medium
    Nib Material Steel
    Nib Colour Silver
    Weight (overall) 19 grams
    Length (overall) 118mm
    Length (without cap) 107.8mm
    Diameter (overall) 18.3mm
    Diameter (grip) 9.7mm