The ink dries quickly, a tip of 0.38 mm is strong even when its use is pressed, the ink flows smoothly so that the lines drawn are not jammed. Contains Cellulose Nanofiber as a mixture of ink. With a smooth decomposition, a smooth transparent gel is obtained and easily flows evenly and smoothly from the narrow gap of the pen. viscosity changes precisely even in various writing situations. Enjoy the smoothness and fluency in writing using UMN-307-38.
Black, Blue, Red
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