Student Writing Fountain Pen Iridium Calligraphy Replaceable Ink Sac

Dear, random delivery: Yunda Express, postal express; if you need to note the above designated Express, please leave a message to the seller before submitting the order on the message board. The warehouse will try to send it. Dear [black ink and black ink bag are sent by default. If you need other colors, contact customer service for remarks] the pen comes with ink suction device (pull-out ink suction device) if you have any other questions, please contact customer service! About the two replacement nibs in the package are of the same type, the thickness is the same dear, ink bag model small diameter 2.6mm thin ink bag. Can use ink bag, ink is also OK, 2 use Oh. [It is forbidden to use 3.4 caliber ink bag, 3.4 caliber ink bag is plastic pen Neutral ink bag]]