Clear plastic 1oz (30 ml) cylinder bottles come with a white ribbed, lined screw on cap. Their design is elegant and are most often used for; cosmetics, high-end beauty products, bath & body products, and perfect for fragrance oils. These bottles have the transparency of glass, and are so slim they give the appearance of a glass vial. Perfect purse sized, and carry on when flying. They are made of heavy wall PET plastic with a 20-410 neck size. Bottles are 3-9/16" tall with cap and have an outside diameter of 15/16" and inside diameter of 5/8".