This smaller sized syringe is ideal for filling batteries. The offset nozzle makes it easy to see what you are doing while adding fluid.
There are many other uses for such an item, such as removing brake fluid from the brake reservoir or accurately setting fork oil level etc. We suggest pulling the piston out and cleaning the rubber after each contact with a substance other than water. The 'single use only' marking is in reference to the syringe's originally intended use in the medical field. For motorcycle maintenance, the syringe can be re-used many times and with a bit of care it will last for many years.