The Clover Iron Off Marking Pen has a fine point which permits the accurate drawing of both straight lines and free hand curves. Clover Needlecraft makes the fine point makes lines and marks more visible and is easy to use with a straight edge ruler. The ink dries white, making it easy to see. It can either be ironed off or sprayed off with water. This pen is a great way to mark your fabric. It comes off easily, even on dark fabrics.