This is a clearance item with very limited stock and is priced to sell, so act fast! 0.5 oz. clear boston round glass bottles are ideal for displaying and storing your product. This glass bottle is produced in Europe and the USA to ensure precision manufacturing and quality. This guarantees that you receive bottles and closures that can meet even the tightest tolerances necessary for high-speed manufacturing. Simply push the orifice reducer into the neck of the bottle for a friction fit seal, and screw on the cap to engage the tamper evident bead. The inner dropper is great for dispensing a single drop from a glass bottle. This cap is ideal for thinner and less viscous products like extracts, essential oils or tinctures. This cap has been tested with over 100 different essential oils to ensure proper fit, no leakage and no degradation even with citrus based oils.