The gun body is made of engineering plastic. The internal structure is made of stainless steel. The scrubber dryer spray gun has a quick-connect adapter and an M22 (14 mm) connector. The gun head is a 1/4 inch quick connector. The black accessory is the adapter. It is easy to use and detachable. It can be easily installed on the Karcher Quick Connect spray gun. Nozzle Set: Five color-coded spray nozzles with red, yellow, green, white, and black for 0°, 15°, 25°, 40°, and 65° spray patterns. Multiple Choices: Different spray nozzle angles meet your needs in different situations, such as watering flowers and plants, washing the car, washing the fence, washing the roof, and allows you to quickly and easily clean hard-to-reach areas. Application: It is also designed for turbo nozzle, surface cleaner, water broom, water train cleaner, swivel coupler, foam cannon, pressure washer kit, gutter cleaner attachment.