I liked my first sewline pencil so much, I bought a second. With the first, it came with fine, graphite looking leads, and I purchased White and Yellow refills. I bought the second pencil so that I could keep a white or yellow lead in that, and the grey, graphite lead in the other pencil, to save having to change over each time I wanted a different colour. With the grey line, you have to draw softly, i.e a fine line, otherwise it's harder to erase if you need to.