Uni-ball Signo Dx Um-100 Gel Ink Pen - 0.5 Mm - 10 Pcs - Uni Mitsubishi Pencil(Blue) 100% made in Japan by Mitsubishi Pencil Co.Ltd Stainless-steel tip with tungsten carbide ball. with 3 colours(black,blue,red). Micro 0.5mm tip ,writes a 0.3mm line.The see through ink barrel lets you see how much ink is left. High-quality and reliable rollerball featuring waterproof pigment ink and 'Uni-Flow' system to ensure a continuous consistent write to the last drop. User friendly,safe and comfortable to use.A favourite for over 10 years.