The pressure washer attachment kit is made of stainless steel and brass. High hardness, wear resistance, rust prevention and corrosion resistance STANDARD SPECIFICATIONS - Pressure washer nozzle capable of 4000 PSI maximum pressure, standard 1/4-inch quick connect, 2.5mm orifice size, 2.5 GPM, withstands a maximum temperature of 212F. Adapters include M22-14 swivel + 3/8 inch plug, 3/8 inch QD + M22-14 male. Provides safe, quick connectors for easy assembly and disassembly Contains 5 pieces of nozzles, including (red 0, yellow 15, green 25, white 40, black soap) 2 pieces adapters The pressure washer nozzle is mounted on the tip of an electric pressure washer wand, making it quick and easy to exteriors, cars, wheel , decks, , fences and other hard-to-reach or clean places on a daily basis. Pressure washer adapters are used to connect power washer , hoses and pumps. Install and remove hoses easily and quickly. Material: Metal colour: As shown Package Contents: 5 x 5 color nozzles 1 set x water pipe brass connector 1 x raw material tape (Note: Random color, don't accept the specified color.) Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.