The 20ML Blue Dropper Bottle with 18MM PP Knurling Dropper is designed for precision and durability. Featuring a high-quality blue glass bottle for optimal UV protection, this dropper bottle comes with a knurling dropper that provides a firm grip and controlled dispensing. The glass tube and silicon white rubber teat with a wiper plug ensure a leak-proof and airtight seal, making it ideal for storing essential oils, serums, and other liquid formulations.