TWSBI - DIAMOND MINI
The TWSBI Mini comes with a benchmark piston ink-filling mechanism and has all detachable parts. Like many other TWSBI fountain pens, it features a crystal clear acrylic barrel so you can see your ink level, and a clear cap. It is completed with silver trim and a silver stainless steel nib.
TWSBI's belief is that it is important to allow the user to disassemble and reassemble the pen and completely experience the traditional aspects of owning and using a fountain pen. These pens also come packaged with a wrench and silicone grease. Neither of these accessories are intended to be used immediately, as they are for long-term care and maintenance. Additionally, please use extra care if you choose to disassemble the nib and feed, as the feed is very fragile.
The body of the pen is made up of plastic. The nib is made up of stainless steel. Screwed type mechanism. Piston-filler ink mechanism [note: ink is not included]. The body of the pen is transparent so you can easily check the ink level.
The use of the ink cartridge and converter is not possible. The pen comes with an instruction manual, silicon grease, wrench, and two o-rings. The pen comes in a paper(outer) box and plastic(inner) box.
Piston filler type fountain pen. Comes in EF, F, M, B, stub1.1, stub1.5 nib sizes. Roughly the same height as an iPhone when capped and stored away. Slightly longer when cap is posted on the pen (perfect length for writing when cap is posted on the back). Roughly 1 inch shorter than a Diamond 580 fountain pen.
Please note: Ink is NOT included
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 perfect. B is for statements!! Sign a check in B, write a header in B, do some coloring/shading in B. Stub nibs are italic in writing style