The TEEJET 11990-18 Brass breakaway swivel is used with high-pressure hose and spray guns so they can move freely without causing kinks or damage that causes leaks. It has a smooth swivel action to make it easier to spray at different angles so the operator doesn't get as fatigued. Brass construction with male to male 1/2" thread connection. Operates at a maximum pressure of 800 PSI.