It is waterproof, heat resistant, lightly scented and fade resistant. It can be applied to all surfaces such as bodywork, rims, tires, plastic, metal, wood, glass, stone, paper, etc. Product Features Line width: 2-4 mm Round tip Pen length: 14. 3 cm Application: When applying with a retouch pen, shake the pen with the cap closed. Before applying, press the tip of the pen on a piece of paper to ensure that the paint reaches the tip of the pen. Excess paint on the tip of the crayon is wiped off with a cloth. The area to be retouched is covered with masking tape so that only the scratch line is visible. After masking, the scratched area is retouched with a pencil.