4oz Black PET Boston Round Bottle with 20/410 Neck Finish This durable 4-ounce black PET Boston round bottle features a standard 20/410 neck finish, making it compatible with a wide range of closure options. PET construction provides excellent chemical resistance and impact durability while maintaining clarity for product visibility. The classic Boston round shape offers practical storage and pouring functionality for pharmaceuticals, essential oils, serums, and specialty liquids. Black opaque material protects light-sensitive contents from UV degradation. Ideal for small-batch producers and retailers seeking reliable, cost-effective packaging solutions. SKU: BSB-112.
