Edding 4200/6S Six-Color Porcelain Brush Pencil Set Combination "Family": Fiber painting for fine details and large areas on porcelain, glazed ceramics, and oven-proof glass that won't drip or run in a dishwasher The stroke width of the flexible brush tip is between 1 and 4 mm. The water-based pigment ink dries quickly, is particulate, and can be adjusted before burning in.