Low weight, Kaweco AL Sport Fountain Pen is an Ideal pen for the on go.. RAW metallic surface of the pen is made of high quality aluminum which exhibits the silky hardened surface, leaving a special feel on its physical structure. Al Sport series pens are the first metal writing instruments produced in 1905. Five spring nib size(s) are introduced in extra fine, fine, medium, broad and double broad. Preference(s) are yours..Pocket sized fountain pen which extends to normal size while writing..