30pcs JINHAO Ink Cartridges Fountain Pen Refills for JINHAO and Baoer Pen Standard Size (Blue Black)

• JINHAO ink cartridges for all kind of JINHAO and Baoer fountain pens(except JINHAO 35 and JINHAO 10). Do Not guarantee this ink cartridge fit for the other brand fountain pens
• Quantity: 30pcs in 6 boxes of small carton
• Lenght:52mm; Cartridge Diameter:Appr 4-6mm; Bore Diameter:2.6mm
• Please remove the converter(ink pump) from the pen first, then stab the small part of the ink cartridge to the pen body(you will feel and hear a "click" which means the cartridge installed in right place) , and please wait a minute for let the ink flow to the nib. If did not work, please change one other ink cartridge to try again
• If any problems caused(like did not receive or pen did not work), please don’t hesitate to contact us, we will try our best to help you solve the problems

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