This 50 ml option is the largest bottle we offer in the euro dropper style. Here they are sold without caps in bulk quantities to provide wholesale pricing and flexibility. Euro dropper bottles are designed with a long neck, including a ring at the end of the threading for pairing with tamper evident caps. These l50 ml glass bottles include an 18 mm neck finish. The green glass allows for UV protection and no packaging interactions with product ingredients. The tamper evident bulb glass droppers could be used to package e-liquids, serums, and homeopathic remedies.