Sei Boku Pigmented Nano Blue-Black Fountain Pen Ink Cartridges Ink Cartridge Featuring innovative Lock-It piston technology

Featuring innovative Lock-It piston technology that tightly secures the piston knob between fillings

Gloss black ABS plastic and barrel and red clip

Cross Ballpoint Refill Dual Pack in blue ink will fit most standard Cross ballpoint pen models except Matrix and C-Series

the Souverän M400 series is a small to medium sized traditional Pelikan writing instrument of the highest quality

Gift-boxed with Conklin International limited life-time manufacturing warranty

Sei Boku Pigmented Nano Blue-Black Fountain Pen Ink Cartridges Ink Cartridge Featuring innovative Lock-It piston technologySailor Sei Boku Pigmented Nano Blue Black Fountain Pen Ink Cartridges for all Sailor fountain pens. The Sailor Sei Boku Pigmented Nano Blue Black ink is water resistant with an intense blue black colour. Product Information: Box of 12 Colour: Blue Black Water resistant