20 drops ≒ 1ml. Expiration date: May 31, 2027. A "tako" tube (likely referring to a type of drip chamber) is included to prevent air bubbles from entering the body. Rubber tubing is also included. For cats with kidney failure. For home care of pets. New, unused, but stored at home, so please understand. Shipping via Nekopos (a Japanese postal service). #Nipro Infusion Set #KidneyDisease #ForDogs #ForCats #InfusionRoute #InfusionLine #InfusionSet