The Sewline Tracer tracing roller is the INKLESS way to imprint lines or marks onto fabric. Use on your finest fabrics whenever you wish to avoid inks or pencils, or use in conjunction with chaco tracing paper. The indented lines can be marked with water for easy locating, and can be used to create fold lines with no worry of setting any ink into the fabric with your iron. The 1.6 mm rolling ball gives a smooth action for easy tracing, and stands up to the pressure exerted. The triangle grip provides a comfortable surface to maintain control over the tool.