Platinum Mechanical Pencil, PRO USE 05 MSD-1000, 0.5mm (MSD-1000B) Platinum Mechanical Pencil, PRO USE 05 MSD-1000, 0.5mm 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-1000B