... thread; 1/4" 3.body+orific material:ceramic detailed spec:1).2003 series ceramic solid stream jet nozzle which design a ... there are some kinds oforifices can be provide, such as ceramic or ceramic inserted ,or replaceable silicone carbide ,body material :SS and ... ceramic inserted,replaceable,ceramic for selection.4.)Connecting Thread:1/4",3/8",1 ...