Oh, and if you feel like saving some time and spending some money, you can always get fatter needles for drawing, then swap out to a smaller needle for injecting. Just be careful not to go too large. I ordered some 18ga needles thinking it would make drawing the oil a breeze, but the first time I used one I got a chunk of rubber stopper in the syringe. Lesson learned. I wouldn't go any larger than 21ga.