Lanxivi Duke Fountain Pen Interchangeable Calligraphy Pen Leather Pen Case Set Nib Size : M and Calligraphy Nib , Cap : Push Type Capped length 140mm , Diameter 14mm & pen weight 35g Take Cartridge : International standard ( Fit the Jinhao cartridges in our store ) Package : 1 x Fountain Pen , 1 x Calligraphy Pen Nib Part and 1 x Animal double leather pen case