Duke Fountain Pen Shark Shape Green Marble Celluloid Iridium Medium Nib Nib Size : Iridum M , Cap : push type Capped length 135mm , Posted length 165mm , Diameter 12-13mm & pen weight 35g Take Cartridge : International standard ( Fit the Jinhao cartridges in our store ) Package : One pen & one removable converter (work with all bottle ink )