Masking without leaving residue: Applying a masking fluid has never been easier. Draw precise lines with the ready-to-use masking fluid pen, without the need for a brush. In this way, white contours and spaces become visible on almost all surfaces. Painting over dry masking fluid is possible with almost all acrylic, water-based or alcohol-based inks. The masking fluid can be removed without residue for up to two days after drying. The masking fluid pen works like a pump pen with a patented valve, for perfect fluid flow. Brand: Molotow