The B204 is a 16 oz natural-colored HDPE plastic twin-neck bottle (requires 2 caps) with 28-410 neck finish. This 16 oz twin-neck bottle is great for chemical and industrial products as well as agricultural, animal and pet products. The twin-neck container will allow your customers to measure out an exact dosage of your product that fits their needs. The B204 has a measuring chamber that will hold 1 oz (30ml) of liquid. This bottle also has numbered markings on the side of the bottle in 1 oz increments. High density polyethylene (HDPE) is marked with the resin identification code of 2. HDPE has a high tensile strength, good resistance to chemicals, good impact resistance, highly rigid, and highly scratch resistant. This item has a 28-410 neck finish. The first number refers to the diameter (in mm), and the second refers to the closure depth, style and thread. This container can be paired with a closure with a matching finish. Natural-colored containers are not actually colored. This is the natural color of the plastic, which is a milky translucent color. This translucent color shows product level, or how full (or, if you're a pessimist, how empty) the container is.