4.5mm Spray Nozzle Assortment. Five peice orifice quick connect spray nozzle set. Includes 0 blasting (red), 15 chiseling (yellow), 25 flushing (green), 40 washing (white) and 65 soap (black) nozzles. Designed for a 1/4 quick coupler and ideal for quick exchange of spray nozzle and spray guns. Connects to all of the most common pressure washer equipment in the industry. 300 F. 4,000 PSI.