Brand from Japan: Shu Uemura. Both fine and thick lines are free. Natural eyebrow is complete with one. Eyebrow pencil of a delivery type that can draw freely a thin line and a thick line with an obliquely cut core. It is hard to collapse with waterproof though it is a smooth drawing comfort. Set it in the main body of the blow sword. How to replace cartridges: Remove the cap. Grasp the cartridge part and slowly pull it off horizontally. Insert the new cartridge horizontally and slowly into the holder part, close the cap.