The Staonal black marker is a professional-grade layout tool designed for jewelers and metalworkers who demand precision. Its specialized ink formula adheres reliably to oily, polished, and textured metal and wax surfaces without smearing or fading during the work process. Use it to mark cut lines, set drill positions, and establish reference points with confidence. Every mark stays put through handling, sawing, and drilling—eliminating guesswork and reducing costly errors. An essential bench supply for custom jewelers, this simple, inexpensive tool pays for itself by improving accuracy and cutting layout time. Whether you're working on intricate designs or production runs, consistent, legible marks mean cleaner results and faster execution.