... Clear boston round bottle 15ml, 30ml, 60ml, 120ml, 240ml, 1/2OZ, 1OZ, 2OZ, 4OZ, , 8OZ, good quality and competitive price A Boston round ... is threaded for closing with a screw cap. Boston round bottles, also called Boston rounds, are bottles with ... 8 ounces (236.6 ml) of material.Boston round bottles normally have a narrow mouth. This helps ... to use a funnel when filling them Clear Boston Round Bottle