Lanxivi 450 Blue Color Fountain Pen Silver Trim Medium Nib with Pen Pouch Length : 138 mm ; Nib : 18KGP Medium Converter Screw type ; Cap : Push-Type Ink cartridge : international standard ( Fit ASIN B00W01VCJA ); Pen Weight : 45G Package : One Pen ,one removalble converter for bottle ink and one pen pouch as picture shown 100% Satisfaction Guarantee : If there is any reason you do not like the pen ,just send us a message ,we can offer you a full refund or replacement !