4 oz clear glass straight-sided round jar with 58-400 neck finish. Straight-sided jars have a wide mouth, thick walls, and a relatively square base. They are simple, elegant, and look great with a label or silk print. Glass has high clarity, can be colored, has high chemical-resistance levels, and has extremely high resistance to heat and cold. It is great for storing essential oils. This container is clear, making it an ideal display container for your product. This item has a 58-400 neck finish.