The Uniweld solution Injector has a capacity of 4 oz and is used to inject solutions into an air conditioning and refrigeration system. It is constructed of rugged aluminum and has a maximum working pressure of 600 lb/sq-in. It has a 1/4 in male flare fitting with valve core at one end and a hand valve with a short length of hose and EZ-Turn anti-blowback fitting at the other end.