Feature●Converts 5/16" SAE Female Charging & Vacuum Ports to Accept 1/4" SAE Male Gauge Connections for R410A Refrigerant.●Compatible with Most R410A Ductless Air Conditioners & Heat Pumps. Works with Most Major Mini Split Brands.●High Quality Brass Construction and Fittings for Exceptional Durability. Senville Trusted Quality and Design. 1 Year Manufacturer Warranty●Can be Used for Mini Split Air Conditioners, Heat Pumps, Central Air Conditioners, Refrigerant Service Ports with R410A Refrigerant.Description