Fuliwen Eagle Head Fountain Pen with Ink Refills Converter , Medium Nib Size ( Black ) Nib : 18KGP Medium Nib Ink: International Standard,you can purchase cartridges by us at ASIN B01FJAAEUQ ,Cap : Push Type Length(Approx): 144mm ; Weight(Approx): 45g ; Diameter:11mm Package : One pen with ink converter for bottled ink and a small soft cloth from Erofa for cleaning pens 100% Mondy Back Guarantee :If you are not satisfied with this purchase , just send us a message ,we will either refund you or send your replacement