[Mitsubishi Pencil] Uni Metal Case 0.5mm HB Black

This time the newly developed uni-ball one ink uses new pigments to minimize the penetration of color materials into paper fibers. The pigments used for "Uniball One Ink" are uniquely developed bead pack pigments that contain traditional colored materials in the particles. The pigments that act as ink are trapped in the particles, increasing the size of the particles, thus minimizing the penetration of colored material to the paper surface. This allows the color material on the paper surface to have the original color, the black is darker and the colors are more vibrant.