Item description according to supplier: The tailor's chalk is a historic accessory of sewing and the clothing industry. This small tool is indispensable for marking pattern lines: darts, placement of trouser and baggy (African) trouser pockets, frill placement...they enable to demarcate the cutting and folding areas. The ergonomics of the triangular chalk is particularly useful when you mark corners. Always do a test on a piece of fabric to verify that the chalk rubs out normally. For dark fabrics, we recommend using the BOHIN chalk pencil. Supplier item number: 75787
