Written by Dan Smith. The Porsche Design 3135 fountain pen is named “Solid” as it is milled from one piece of massive Titanium. The unbroken, pure outline gives the fountain pen a unique shape and matches perfectly to the 18 carat gold nib. This special gold nib is completely rhodinized and represents Understatement and Elegance. The Porsche Design icon is embossed at the top of the nib. The barrel is precisely milled, polished and finally covered with a scratch resistant PVD coating.