Asvine Fountain Pen Ink Syringe Filler Spring Converter Removable Blunt Tip 5 Pack

The spring converter is compatible with fountain pens that use a 3.4mm converter, such as Hongdian fountain pens, by removing the injection needle. Ideal for filling and cleaning fountain pen ink cartridges, converters, and bottled ink. Easy to fill. Simply dip the tip into the bottled ink, press down on the spring stick, and release the stick to pull the ink up into the converter. Easy to assemble: The filler comes with 3 parts (converter, white connector and needle). Simply attach the converter and needle to the correct end of the connector (see video for details). This can be easily done by wrapping a cloth and adding grease to the connector. You may need to press a little harder when assembling it for the first time. Non-sterile, industrial use only! Easy to assemble: This syringe filler comes with 3 parts (converter, white connector, and needle). Be sure to attach the converter and needle to the correct end of the connector (see video for details). This can be easily done by wrapping a cloth and adding grease to the connector. You may need to press a little harder when assembling it for the first time. Spring converter works with Hongdian fountain pen when removing the syringe needle. Ideal for filling and cleaning fountain pens. To keep your fountain pen in good condition, we recommend cleaning your fountain pen at least once a month. This fountain pen auxiliary absorbent works reliably. Easy to fill. Simply dip the tip into the bottled ink, press down on the spring stick, and release the stick to pull the ink up into the converter. package: 5 x 3.4mm spring converters with stainless steel syringe needles. size: Length with needle: 130mm Length without needle: 75mm Spring converter bore diameter: 3.4mm