Specification Product Name: Invisible pen without cutting (for garment leather) Packing: 4 sticks Size: 17cm(6.7in)x9mm(0.35in) Invisible erasable pen for custom tailoring marks, suitable for professional tailors and home tailoring Instructions for use: Pull up the thread to cut the surface roll paper, peel off the roll layer in divisions, and then the pen core will leak out. It is easy to use, non-toxic and non-polluting. After being used on different fabrics for a few days, the scratches will fade naturally, and the scratches where the iron goes will fade immediately when ironing. It can also be used for marking and marking on glass, ceramics, furniture, etc.