black (whole pen)(黑色（整支笔）) red (whole pen)(红色（整支笔）) blue (whole pen)(蓝色（整支笔）) black refill (bulk)(黑色笔芯（散装）) red refill (bulk)(红色笔芯（散装）) blue refill (bulk)(蓝色笔芯（散装）) black pen box/12 pcs(黑笔盒装/12支) red pen box/12 pcs(红笔盒装/12支) blue pen box/12 pcs(蓝笔盒装/12支)

0.5mm bullet(0.5mm子弹头)