This Sink is made of extremely durable polyethylene that is easy to clean and use. This Hand Sink is a self-contained, electric hand washing system that can be used alone. It can run hot and cold water for up to 70 hand washings, and includes: double stainless steel sinks, 2 each 5 gallon fresh water tanks, a 7 gallon waste water bin. This portable sink has 6" (15 cm) casters, 2 fixed, 2 swivel with brake allowing for easy transportation. Ideal for anywhere that portable hand or food washing is needed.