Ceramic inserts provide up to 10 times the life of stainless steel inserts, maximizing your return of investment and decreasing downtime for nozzle replacement. Extra long life ceramic orifice is nearly diamond-hard to resist wear. The wedge-shaped orifice insert seats tightly as spray Press increases. The external body made out of stainless steel v2a / AISI 304 has a polished surface which is resistant to rust and slight damages. The external body made out of stainless steel v2a / AISI 304 has a polished surface which is resistant to rust and slight damages. The nozzles are equipped with a 1/4" m npt connection.300 bar 125°c