Why buy the Pilot BLSG25 Gel Rollerball Pen Refill?. Compatible with Pilot G2 05 Retractable Gel Pen, B2P Gel, MR Gel Rollerball Pens. 0.5mm ball writes a 0.32mm line. Compatible with Pilot G2 05 Retractable Gel Pen, B2P Gel, MR Gel Rollerball Pens.
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