Erie Tools 4.5 Stainless Steel Orifice 0 Degree 1/4" Quick Connect 4,000 PSI High Pressure Washer Spray Nozzle Tip Nozzle Orifice Size: 4.5 0 Degree nozzle high-pressure cutting spray tip. Maximum PSI: 4,000 1/4-inch stainless steel insert. Delivers a concentrated stream that can gouge or cut.