erasable pen core crystal blue bullet hot erasable rub easy to wipe sponge wipe 0.5 carbon black crystal blue water replacement refill 可擦笔笔芯晶蓝子弹头热可擦摩易擦魔力擦0.5炭黑晶蓝水笔替芯

erasable pen core syringe head crystal blue refill syringe head carbon black erasable pen core bullet crystal blue erasable pen core bullet carbon black push-able black refill push crystal blue refill press astronaut boxed 6 pieces (a box of crystal blue) press astronaut boxed 6 (a box of crystal black)

0.5mm