Perfect for precise liquid dispensing! These Sandhill Tools dropper caps come in a pack of 20 and are designed to fit standard 1 oz/30 ml bottles with 20-400 neck size. Each set includes a child-resistant cap that requires pushing down while turning to open - great safety feature if you have kids around. The 2.95-inch glass pipette is graduated up to 1 milliliter with 0.25 milliliter increments, so you can measure liquids accurately drop by drop. This is super helpful for medications, essential oils, crafts, or any situation where you need controlled dispensing without waste. The glass construction is clean and clear, making it easy to see how much liquid you're using. They're specifically designed for plastic bottles only, so keep that in mind. Whether you're making homemade products, organizing your essential oils, or need precise dosing for supplements, these dropper caps make the process much easier. The graduation marks are clear and easy to read, and the glass feels quality in hand. Since you get 20 in a pack, you can outfit multiple bottles at once or have spares on hand. If you're tired of guessing measurements or dealing with messy pours, these graduated droppers will make your life so much simpler. They're one of those small upgrades that make a big difference in organization and precision.