The UNI POSCA PC-7M thick 4.5-5.5mm blue marker is designed for large-format drawings, fillings, and expressive strokes on various surfaces. With a wide 4.5-5.5mm conical tip, it ensures quick application of pure, even blue acrylic paint. The opaque, solvent-free formula completely covers any previous color and permanently adheres to porous materials such as wood and plaster. The blue color provides high visibility and a high-quality matte finish. Suitable for graphic artists, interior decorating, and custom signage.