The NEW Aluminum Version in Stone or Black Writing with metal  Before the pencil was invented, medieval scholars used a silver tip  to draw fine lines. This archaic utensil served as the prototype for  the “beta inkless pens” developed by Axel Weinbrecht GmbH. The tip is made of a specially developed AXL-metal-alloy which will • write for a lifetime • on all types of paper • at any temperature  • in all climatic conditions • There's no ink, so it won't dry up or leak. • Lays down a silver line that can vary in darkness by applying more or less pressure or shade with the side of the tip. AXL-Metal-Alloy  The materials used are derived modern material research and are absolute environmentally and health-friendly no toxic materials! Lifetime usage also means: The inkless pens are a sample for sustainability.