Amazon links here:

1oz

https://www.amazon.com/Clear-Boston-Round-Black-Lined/dp/B07YXCD6B3/ref=sr_1_3?keywords=boston+round+1oz&qid=1580920349&sr=8-3

2oz

https://www.amazon.com/Pack-Amber-Boston-Round-Black/dp/B07YXCZL9J/ref=sr_1_2?keywords=boston+round+2oz&qid=1580920307&sr=8-2

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Search up Boston Round on Amazon and make sure it has the Phenolic Cap for best seals... or if you're a Canadian use .ca or go to COnsolidated Bottling's website/store and get them i bulk.