10 boxes of 144 units available, 1440 pcs total.  These are black 20-400 size Child Resistant Glass Droppers with graduated marks on the glass pipette.  Fits 1 oz (30 ml) bottle. This dropper assembly features a black silicone bulb. Color: Black Pipette: 76mm Neck Size: 20-400 Material: Polypropylene Fits 1 oz Boston Round