With its extra-fine calibrated metal tip, the PC-1MR has all the qualities of an ink marker in pen form! Designed for amateurs and professionals seeking a dense, ultra-fine line. Designed for amateurs and professionals seeking a dense, ultra-fine line. 4bdb2 - Precise. 4bdb3 - Its calibrated tip produces a clear, regular, and refined line. 4bdb4 - Consistent. 4bdb5 - The line doesn't vary, and the effect is always perfect. 4bdb6 - Original. 4bdb7 - The marker combines perfect lines with the qualities of POSCA ink. 4bdb8 - Convenient. 4bdb9 - The cap fits onto the end of the marker when in use, like a pen. 4bdba - Multipurpose on any surface (glass, metal, wood, plastic, paper, etc.)