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The TWSBI Diamond Mini Clear is a pocket sized fountain pen with a piston filling system, making it a great daily workhorse at a pocket friendly price. This small but mighty fountain pen features a clear acrylic resin body, Cap, Grip section and turning knob with chrome Plated trims, and stainless steel nib for a smooth writing experience. This pen runs smaller in length than the Diamond 580. Its piston filling system provides a large ink capacity for such a small pen, and the clear body allows you to view the level of ink remaining at all times. The pen feels sturdy and well-made, and when posted, behaves like a full-length pen. The TWSBI Diamond Mini Fountain Pen is a daily workhorse and a cute, stunning writing instrument.
With a history of more than 40 years of manufacturing, including producing high-end pens for other brands, Ta Shin Precision decided to start selling under their own brand, TWSBI. The name TWSBI is made up from TWS and BI. ‘TWS’ is the reversed initials of the phrase ‘San Wen Tong’, translated Hall of Three Cultures, and ‘BI’ literally means writing instrument.
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| Condition | New |
| Brand | Twsbi |
| Brand Origin | Taiwan |
| Product Code | M7443000, M7443010, M7443020, M7443270, M7443280, M7442990 |
| Type | Fountain Pen |
| Brand Colour | Clear |
| Colour | Transparent |
| Body Material | Resin |
| Mechanism | Cap on / Cap Off |
| Cap Type | Screw Cap |
| Compatible Converter | Bottle Fill Only |
| Filling Mechanism | Piston Filler |
| Grip Material | Resin |
| Nib Size | Fine, Medium, Broad, STUB 1.1mm, STUB 1.5mm, Extra Fine |
| Nib Colour | Silver |
| Nib Material | Steel |
| Postable | Yes |
| Trim | Chrome Plated |
| Diameter (MM) | 13 |
| Length - Closed (MM) | 118 |
| Length - Posted (MM) | 140 |
| Weight (gms) | 19 |
| Warranty Info | 2 Year warranty Valid against manufacturing defect only |
| Package Content | 1 Fountain pen comes with nice twsbi gift box |
Parker Aster Matte Blue GT Fountain Pen
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Very nice pen
Very conveninent to carry a pack of ink cartridges when you are on the go. Nothing better than Pilot ink cartrdiges - relatively inexpensive, intense inks.
Superb flow nice grip as smooth as butter and yet too precise
Superb craftsmanship and on time professional delivery.
Nice wet ink
Waterman Expert Mars Black GT Fountain Pen
I’ll admit I was skeptical about the Hongdian C1 at first, particularly since I rarely use fine nibs.
However, any hesitation vanished the moment I put pen to paper. The writing experience is truly charming and smooth. I’m also impressed by the included converter, which holds a generous amount of ink.
It has quickly become a staple in my daily rotation—so much so that I’ve already purchased four more! I have gifted the white one to one of my friends who also become very happy. The yellow one is hijacked immediately by my daughter!
Kudos to Online Mantra for the excellent service.
I’ll admit I was skeptical about the Hongdian C1 at first, particularly since I rarely use fine nibs.
However, any hesitation vanished the moment I put pen to paper. The writing experience is truly charming and smooth with a very satisfying feedback.
I’m also impressed by the included converter, which holds a generous amount of ink. It has quickly become a staple in my daily rotation—so much so that I’ve already purchased four more!
Kudos to Online Mantra for the excellent service.
Really nice one. Exvellent ink supply
Very nice converter
Fine
In my collection, this is a second pen I have purchased and i think it is one of the best pen rather other costlier ones..
Also th flow of ink and smoothness of the click nibs are awesome..
BEST WISHES !
It’s a nice pen with butter smooth wet nib over all a bit large pen but verz comfortable in my hand grip is also very ergonomic for long writing


