Ⅰ. PE plastic, sturdy and durable. The IBC lid is made of PE plastic. It is strong and durable and not easily damaged. It is sturdy and has good hygiene for long-term use. Ⅱ. Vent, good sealing and ventilation. The IBC tank cover has air holes on the edges for good ventilation and air permeability. The IBC tank cap has a threaded connection and is well sealed to prevent leakage of liquids inside. It provides a level of safety. Ⅲ. IBC adapter cap with 163mm inner diameter. Our caps have an inner diameter of 163mm and are suitable for use in IBC tanks. Make sure the contents inside are clean and leak-proof. Ⅳ. Red rounded lid design with delicate and compact appearance. Our IBC container accessory lid features red color and round design. The appearance of the IBC cover looks delicate, and it is light and easy to store. Ⅴ. The tank connector of the IBC tank cap is highly resistant to corrosion and acids and bases. It offers chemical resistance and is suitable for use in industries such as chemical, medical and food. Safe to store and easy to transport, they are ideal for storing and transporting modern liquid products. Ⅵ. Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement.