The TWSBI (commonly pronounced "twiz-bee") Diamond 580 is the 21st Century interpretation of a classic writing instrument. While most of our modern communication devices lack transparency and customization, the TWSBI Diamond 580 excels with a transparent resin construction that can be disassembled using the included wrench.

The Diamond 580 represents the fusion of a traditional fountain pen with a modern industrial design. The result is an eye-catching writing instrument that is simultaneously appreciative of the past and relevant in the present. The modern writer can appreciate the stainless steel nib's smooth writing quality, the high volume ink capacity, and the ability to take good care of their pen.

The Diamond 580ALR has an aluminum grip section and piston rod to add substantial style to this fountain pen. The matte grip section and cap top ring feature concentric, ringed engravings.

The internal piston-filling mechanism holds about 2 ml of ink and can be completely taken apart for thorough cleaning. Instructions and silicone grease are also included to aid in the maintenance of the pen.

TWSBI Diamond 580ALR Fountain Pen in Caribbean with Onyx Specifications

• Edition: Limited Edition
• Pen Material: Transparent Resin and Aluminum
• Nib Material: Stainless Steel
• Nib Color: Black
• Trim: Caribbean & Onyx
• Filling Mechanism: Internal Piston-Fill Mechanism (Bottled Ink Only)
• Pen Length, Closed: 5.59 in. / 142mm
• Pen Length, Open (Cap Off): 5.12 in. / 130mm
• Pen Length, Open (Cap Posted): Pen cap cannot be posted.
• Pen Max Diameter, Barrel: 0.52 in. / 13.3mm
• Pen Diameter, Grip: 0.4 in. / 10mm
• Total Weight: 1 oz. / 28g
• Packaged in clear case with a wrench and silicone grease.
• Made in Taiwan