Fill the reservoir of this eraser pen with water to remove water-soluble marks, or with the Aqua Eraser detergent liquid (eQuilter product code UNSLIAQR) to easily and precisely remove ceramic pencil. With available replaceable absorbent felt tips (eQuilter product code UNSLIAQT) and refill liquid, this eraser pen with last through many sewing adventures. 'Aqua Eraser' pen by Sewline.