The One Ounce Amber Boston Round is perfect for bottling liquids without a discernible color. The single size is an affordable option for bottling many small orders to sell by individually or by the tray. Each One Ounce Amber Boston Round also comes with a secure Black Poly Cone Cap for a tight seal.
Closure sizes are expressed using two different numbers.
For example, a closure size of (20/400) has a diameter of 20 mm and fits a bottle with a 400 GPI thread finish.
Some neck sizes are interchangeable. For instance, a 20/410 closure will usually fit on a 20/400 bottle. Also, 410 and 415 are usually interchangeable if the closure is not tamper evident.