The B2117SL is a 80 mL silver aluminum bullet bottle with 24-410 neck finish. The boston round bottle is distinctive in its classic shape. Characteristic of the boston round are its rounded shoulders and rounded base. The interior of this bottle does have a gold transparent epoxy lining. This item has a 24-410 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 a matching finish.