Great Product and Service, Just a Slow Delivery Time
I needed to find a way to refill fountain pen cartridges as the converter was hard-to-find or was not available. This was well described and seemed to be a good workaround for what I needed. The delivery was slow, (about 7 days) even though it is an Amazon Prime product, hence losing 1 start point. However, when I received it I couldn't wait to try it out! There are three components to each syringe: the ink reservoir, the needle and the plastic connector. Note: The narrow end of the connector is inserted into the needle. Once done, you can press down on the syringe's piston and then place the tip of the needle into a bottle of fresh fountain pen ink (I use special one that does not clog the pen tip); gently release the spring  of the piston and you get a full chamber of ink. From there you can insert the tip of the syringe into your empty cartrige, fill it up by pressing down on the piston. I then got a piece of paper towel just the clean up a bit,  inserted the now full cartridge into the pen, connect everything back up again, and it writes perfectly, without any spillage! It's really amazing and a great way to be able to use your favourite ink colours where an ink converter is not available.
Rating: 4 stars