Rising Dragon 2 inch diameter spinning jet with stainless steel/gray twin roto jet action -  RD201-1427S.

This is a thread-in style jet that screws into the Rising Dragon jet body. 

This is a large face twin-spin jet or pulsator jet by Rising Dragon in stainless steel and gray.

This 2 inch RD201-1427S jet also replaces part number 842944.