For use with R-134A refrigerant Low pressure: 0~220psi High pressure: 0~500psi Knurled fitting and twist valves Specifications: Blue(Low) Guage: 0-220psi Blue Hose: 1/4 in. FFL x 50 in. Read (high) Guage: 0-500psi Red Hose: 1/4 In. FFL x 50 in. yellow Hose: 1/2 in. ACME x 50 in. Guage Accuracy: +/- 2% Genuine Neilsen Product
