Sewline's fabric pencil uses ceramic leads for drawing on fabrics with a fine, clear line. No particles are left, as with tailors chalk, or hard to remove marks. Just remove marks with the Sewline Eraser or dab off with a damp cloth. No sharpening and messy wood shaving, a click advances the fine 9pt leads. Easy to refill with up to 6 leads. Pack includes 6 black lead refills.