The surface of the body is hard to damage and has a beautiful shine. The new cap prevents drying of the ink. This model has an innovative cap which contains a unique 'Slip & Seal' mechanism that prevents ink from clogging, even if the pen goes un-used for a year. Nib: Stainless steel. Body: Aluminum body with anodizing. Go see in the 'Specifications' section below the PDF file to view the properties of the ink with this fountain pen.