• Tinge Twin Double End Drawing and Painting Marker: Professional marker for sketch and sketch. The illustration is suitable for the industrial design, architecture and fashion design sectors. Double-sided marker : 1 mm thin and rounded tip on one side for details and 6 mm thick cross-cut tip on the other side of the pen for fast painting. High-quality alcohol-based transparent ink: does not leave marks and dries quickly. Plastic body plastic cover. Suitable for paper and cardboard. Disposable and non-refillable.