Pilot Plumix - M - Medium - 0.58mm :
Pilot Plumix fountain pen is designed for both calligraphy and everyday writing. It has a black plastic grip, a screw cap and a window in which you can track the ink level. The nib is made of stainless steel. The pen comes in five variants of the nib: EF, F, M, B and BB.
Standard size cartridges fit the pen.
Writing width : 0.58 mm