• Refrigerant: R-410A/R-22/R-404A/R-134a
• 3/8" SAE port increases vacuum capacity and saves time
• Optical sight glass for monitoring refrigerant
• Durable, brazed brass T-handles provide smooth, precise adjustments
• NPF No Pointer Flutter 3-1/8"" gauges with color coded refrigerant scales and color coded gauge boots

Uniweld's (Aluminum Manifold with 3-1/8" NPF Gauges) anodized aircraft aluminum block body with 4 ports for charging, evacuating, and testing a system without changing or removing hoses.