(Allflex) Allflex 20VM-S-3 automatic self-filling tube feed syringe. Designed to be used as an injector or drencher (purchase drench nozzle #15820 separately). Adjusts from 1 ml to 20 ml. Complete with tubing and draw off caps for use with 100, 250 and 500 ml bottles. Amber-colored barrel and tubing reduce UV sunlight exposure. Double O-ring piston design. Easy V-grip for high volume use. Handle tension adjusts easily for improved performance.