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The TWSBI Diamond 580 comes with a benchmark piston ink-filling mechanism and has all detachable parts. The clear demonstrator barrel allows you to see your ink color and remaining ink level. It has a clear translucent cap, grip section, and piston knob. It is complemented by elegant Chrome Plated trim, a Stainless steel nib, and is presented in a modern clear display case. The TWSBI Diamond 580 is a classic fountain pen with a piston ink-filling system. By fusing the traditional mechanisms of the fountain pen with a modern industrial design, TWSBI has created an eye-catching fountain pen that is simultaneously appreciative of the past and relevant in the present. The TWSBI logo is placed at the top of the cap. 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.
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 | M7443110, M7443120, M7443130, M7443140, M7443150 |
| 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 | Extra Fine, Fine, Medium, Broad, STUB 1.1mm |
| Nib Colour | Silver |
| Nib Material | Steel |
| Postable | No |
| Trim | Chrome Plated |
| Diameter (MM) | 10 |
| Length - Closed (MM) | 142 |
| Weight (gms) | 28 |
| Warranty Info | 2 Year warranty Valid against manufacturing defect only |
| Package Content | 1 Fountain pen comes with nice twsbi gift box |
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