Pilot Hi-Tec-C Coleto Gel Ink Pen Refill 0.5mm, 15-color Set(Japan Import) [Komainu-Dou Original Package] Line width: 0.25 mm Ink: Water biopolymer ink System: Slide lever type Ink Color: Black, Red, Blue, Green, Violet, Pink, Orange, Clear Blue, Blue Black, Brown, Baby Pink, Apricot Orange, Cherry Pink, Aqua Blue, Apple Green Multi Pen Body is sold separately.