These dropper assemblies are designed to fit bottles with 18/400 thread size. All droppers are made of glass with polyethylene bulbs and polypropylene screw closures.
These dropper assemblies are designed to fit bottles with 20/400 thread size. All droppers are made of glass with polyethylene bulbs and polypropylene screw closures.
These dropper assemblies are designed to fit bottles with 24/400 thread size. All droppers are made of glass with polyethylene bulbs and polypropylene screw closures.
These dropper assemblies are designed to fit bottles with 28/400 thread size. All droppers are made of glass with polyethylene bulbs and polypropylene screw closures.