The Carquest Premium Compressor Oil is specifically designed for R134a systems, with a volume of 8 ounces packed in a single container. Made by CARQUEST, a trusted brand in automotive tools and supplies, this A/C refrigerant oil ensures optimal performance and longevity for your vehicle's air conditioning system. Manufactured in China, this product includes a warning for California customers regarding potential chemical exposure, emphasizing the importance of understanding the risks associated with its usage.