The G809CLF is a 7 mL frosted glass low-profile jar with 38-400 neck finish. This jar has a rounded base, and a low profile, which means, it's short. Glass has high clarity, can be colored, has high chemical-resistance levels, and has extremely high resistance to heat and cold. It is great for storing essential oils. This item has a 38-400 neck finish. The first number refers to the diameter (in mm), and the second refers to the closure depth, style and thread. This container can be paired with a closure with this matching finish (see Matching Items below).