Lanxivi Bookworm Celluloid Flower Pattern Fountain Pen with Pen Pouch Nib Size : 0.5-0.6 mm , Cap : Push Type Capped length 138mm , Diameter 12.5mm & pen weight 30g Take Cartridge : International standard ,ink cartridges are not included for safety , you may refer to the matching cartridges at ASIN B00W01VCJA Package : One pen ,one converter & one lanxivi pen pouch as picture shown 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 !