Product InformationMaterial: Glass Capacity: 30ml Total height: 72mm/2.83inch Open mouth diameter: 16mm/0.63inch Container bottom diameter: 20mm/0.79inchProduct descriptionBoston round glass bottles are very suitable for homemade vanilla extracts, essential oils, pharmaceutical products, colloidal silver, herbs, high-quality salt concentrates, and are suitable for potions. The size of the Boston round glass bottle is suitable for wedding gifts, Christmas gifts and holiday gifts.