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Amazon.com : Staedtler Mars Micro Carbon Mechanical Pencil Refills, Tube of 12 0.5mm B Fine Point Graphite Leads, 250 05-B : Office Products
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Amazon.com : Staedtler triplus micro 1.3mm Lead Retractable Mechanical Pencil with Twist Eraser, 6 refills, 2-Pack, 77413SBKA6, Model: 77413SBKA6ST : Office Products
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