2 oz Amber Boston Round with a 20-400 CT (continuous thread) finish is an excellent choice for packaging of essential oils, extracts or other light sensitive products. This bottle can be paired up with any of the closures under the Product Accessories below. Closures are sold separately. Bottles are sold by case quantity. Scroll down to the From the Blog section to learn more about our Amber Bottles, Lids & Droppers.