This product is a set of four cans of refrigerant HFO-1234yf, designed for use in automotive air conditioning and heating systems. The cans are self-sealing and each contains 8 ounces of refrigerant. The brand of the product is Honeywell, and the manufacturer part number is R1234yf. The product was manufactured in the United States and does not come with a California Prop 65 warning.