Product Features:
Individually packaged.
20 or 100 pcs, meet your usage quantity requirements.
Standard luer lock tip, if our needle gauge not fit for you, can use with other standard needles.
Used for a refill, measuring, and dispensing liquid, like ink refilling, essential oil, not too heavy glue,scientific experiments, pet rescue.etc.

NOTE:
If you want to reuse it, please take care of the measuring numbers, because the number is designed for single-use, you can use clear tape to cover it to prevent washing off.