Lanxivi Fuliwen Carbon Fiber Fountain Pen Medium Nib with Pen Pouch Nib : Irium M Length : 138 mm ; Pen Weight : 55G ,Converter Screw type ; Cap : Push type Ink cartridge : international standard ,Ink cartridges are not included for safety , you may refer to the matching cartridges at ASIN B00W01VCJA Package : One Pen ,one removable converter ( work with bottle ink) and one pen pouch 100% Satisfaction Guaranteed : 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 !