1.The syringe is suitable for inkjet printer cartridge
2.The capacity is 20ml or 60 ml
3.The syringe can be remove the air from the cartridge when your cartridge has air in it.
  As we know,there may be air in the CISS tank and the tube roll when you use the refill cartridge and the continuous ink supply system some time.You can use our the syringe to remove the air from the cartridge,and then you can print  fluently .