Lanxivi Duke Big Fountain Pen Black Heavy Weight Vivid Black Color Nib Size : Iridium M , Cap : Push Type Capped length 130mm Diameter 14mm & pen weight 45g Take Cartridge : International standard , ink cartridges are not included for safety , you may refer to the matching cartridges at ASIN B00W01VCJA Package : One pen and one converter to work with bottle ink 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 !