Cambro Manufacturing Co. Won't dent like metal, ensuring an accurate measurement every time. Externally marked graduations are molded-in. Made of rugged, virtually unbreakable Camwear polycarbonate. Molded-in handle won't break off. WARNING: This product contains chemicals, including Bisphenol A (BPA), known to the State of California to cause cancer, birth defects and other reproductive harm www.p65warnings.ca.gov.