TWSBI Diamond 580 fountain pen Nib character width is EF

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fountain pen. Diamond 580 is equipped with a standard ink intake mechanism and can be completely disassembled. We felt it was important for our customers to be able to disassemble and reassemble their pens, allowing them to own and use their fountain pens in a completely traditional way. Diamond 580 is a classic fountain pen with a piston-type ink suction system. -