ZORRO Fire Nozzle Spray with 18mm Solid Brass Connector Airline Fittings Claw couplings are designed with SIZE:10mm Tail Claw couplings are designed with a common or universal claw which enables differing hose sizes and nominal bore sizes to be connected This Listing include 2 X Brass hose connector 1 X Brass tap adapter suitable for both 1 2" & 3 4" taps and a Fire Nozzle with brass adapter as seen in the photos High Pressure Fire Nozzle with 18mm 3 4 inch Solid Brass Connector suitable for use with a 18mm 3 4 inch Hose The black dial in the middle controls the pressure of the water and the actual nozzle also can be adjusted by turning for different types of flow from jet to mist