AC Refrigerant R410a Manifold Gauge Set 2 Valve w/ 3 Hoses Manifold with Built-in Sight Glass, High Pressure or Low Pressure is Selectable Diaphragm Valves with Swivel Seals for More Positive Seal and Less Wear Aluminum Alloy Testing Manifold Body, High Impact Pop-in Lexan Lens Working Pressure: 800 PSI, Burst Pressure: 4000 PSI Designed to Meet 1/4" SAE Requirement for Refrigerant Permutation