Uni Posca PC-5M has a 1

The pen is simply refilled with ink cartridges and you will get one black ink cartridge and one red ink cartridge when you buy the pen

and compatible with MOLOTOW spray paints and other markers

The pen is refillable and just like all Ballograf pens

colored pencil

zig memory systems ms 3400 calligraphy twin tip pen Ink and paint refills Uni Posca PC-5M has aA lightfast, acid free calligraphy pen perfect for fine creative writing and creating journals. The Zig Memory system series is archive proof and guarantees that you memories and notes will be preserved also for future generations. The Zig Memory Systems MS 3400 Calligraphy Twin Tip Pen has one 2 mm nib and a a 5 mm nib in the other end.