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Set of 3 ballpoint pens, blue, pink and black. Take notes, study, work, vector design and isolated background. 15572691 Vector Art at Vecteezy
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Studying at home. I inked my twsbi eco with twsbi blue-black and I'm actually amazed. It performs so well even on this cheap paper! : r/fountainpens
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Why everyone 'in general' write with combination of blue and black pen? Is there any reason? - Quora
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