The washer gun head has a 1/4" quick connector and is compact with a 1/4" socket, such as a foam cannon, nozzle tips, and a swivel coupler. In addition, the M22-14 thread inlet connector is easy to connect to a 14mm diameter pressure washer hose. Do not connect the garden hose or water hose. The gun body is made of engineering plastic. The internal structure is made of stainless steel. The washer spray gun is a 1/4" quick disconnect connector and an M22-14 thread inlet connector (14mm inner diameter). The black accessories are an M22 to QC adapter, it is easy to use and detachable, which means it can be easily installed on the Karcher Quick Connect spray gun. Equipped with 5 different colored quick connect nozzles: the red nozzle is suitable for blowing (0º), the orange nozzle is suitable for stripping (15º), the green nozzle is suitable for cleaning (25º), the white nozzle is suitable for washing (40º), and the black nozzle is suitable for soap (65º). You can choose the right nozzle