Platinum Mechanical Pencil, Pro Use 03 Msd-500, 0.3mm (MSD-500A) Platinum mechanical Pencil, Pro use 03 msd-500, 0.3mm PRO use mechanical Pencil for drafting from Japanese stationary Brand Platinum fountain pen, all Series available for 0.3mm, 0.5mm and 0.7mm lead Model: MSD-500A