4 Oz Clear Glass glass bottles comes with White dropper. The clear glass bottle in the Boston round style include a sturdy base, straight sides, and rounded shoulders. This is a unique selection of 4 oz bottle provides a highly durable and stylish set for a range of products. White bulb glass droppers are highly popular when dispensing products that could consist of serums, cosmetics, essential oils, and more with simple and accurate control while distributing.