Lanxivi Jinhao Century Fashion White Color Black Line Celluloid Fountain Pen 18kgp Medium Nib with Pen Pouch Length : 135 mm Converter Screw type ; Cap : Screw -Type Ink cartridge : international standard ( work with the lanxivi cartridges in our store ) Pen Weight : 40G, Nib : 18KGP Medium ,Diaeter 12.5mm Package : One pen & one lanxivi pen pouch as picture shown