syringe head 3 colors erasable pen mo yi erasable refill 0.5 crystal blue mo heat erasable gel pen red and black ball pen

zx1086 -- blue zx1086 -- black zx1086 -- red zx1084-blue zx1084-black zx1364-blue zx1364-black k9907-blue k998-blue 9929-blue ks1 blue gp3176 -- blue gp3176 -- black gp3176 -- red

0.5mm