Material: This fabric pens are made of environmental-friendly materials, safe and non-toxic. It is not easy to break, drawing smooth and the line is clear. 12Pcs Set: Package comes with 12 pcs invisible erasable pen for tailor dressmaker craft marking to meet your needs in the maximum extent. It's practical sewing accessories for leather craft working. Sales Service: We are committed to create the best product service for each customer. If this product does not meet your expectations, please feel free to contact us, we will try the best to deal with till you satisfied. Application: Widely used in clothing, cloth, leather, shoes, metal, wood, ceramics, paper, and other industrial processing production marking. Erasable: The lines naturally fade away after several days, or will disappear immediately upon contact with a hot steam iron. As the surface is wood, it is non hand sticky and not stained while using.