80 pezzi, 20-400 contagocce in vetro con segni graduati 7x89 mm per Boston rotondo da 2 oz
This is a Black PP Plastic 20-400 Ribbed Skirt Dropper Assembly with Rubber Bulb and 89 mm straight tip glass pipettewith yellow graduation marks at. 25. 5. 75, and 1 mL. (fits with a 2 oz glass boston round bottle).