Also referred to as Dairy Jugs, this 1 gallon (4 liter) natural high-density polyethylene (HDPE) plastic jug with a 38 mm (38-400) continuous thread neck finish and square base. It features a handle on top near the opening, which is ideal for carrying and pouring. These plastic jugs have a square body and base, making it space efficient for shipping and shelving. This makes them a perfect option for packaging liquids for the food industry, such as juices and dairy products.