Premium square glass dropper bottle with precision-engineered plastic collar and leak-proof dropper cap for professional-grade oil storage and dispensing. Featuring high-clarity borosilicate glass with smooth edges and uniform thickness for chemical resistance and durability. The ergonomic plastic collar ensures secure cap attachment while the tapered dropper allows controlled 0.5ml-1ml drops. Ideal for essential oils, CBD tinctures, skincare serums and liquid supplements. Designed for apothecary, aromatherapy and cosmetic professionals seeking laboratory-grade packaging. Bulk quantities available for wholesale purchasers with industry-leading unit pricing.