A fountain pen is an instrument which is used for writing purpose. Now a day a fountain pen is an essential article of the educated men of all ages. Students and educated men can not do a single moment without a fountain pen. It has earned much popularity. It has two parts- the main body and the cap. The main body holds the nib. It is hollow inside and holds ink in its hollow body. Again there is a rubber tube in the hollow bodies of some fountain pens. This rubber tube contains ink. The cap has a clip attached to its end. It protects the nib from the clip one holds a fountain pen on the edge of his pocket. The fountain pens are of different colors, shapes and sizes.