Koval Inc. 1/4" Adaptor for R410a with 3 Charging Ball Valves Fittings Designed for standard 1/4" SAE refrigerant charging hoses Approved for R410A refrigerant Brass valves are color coded on knobs 1-Red, 1-Blue & 1-Yellow HVAC, HVAC/r, A/C service Tech hand tools PLEASE READ PRODUCT DETAILS BELOW BEFORE PURCHASING