Come with 6 pack 500ml/17oz wash bottles. | Made of LDPE (low-density polyethylene), flexibility, lightweight and safety. | Great for storing bleach, washing labware, hold acetone, also can use them to water plants. | The angled neck and tip provide a uniform stream of liquid and the tip can be cut back if required to increase the flow. | Boston round shape for applications that require a rounded body, short neck, and narrow mouth to store liquid samples and solutions, and dry materials.