✔ The washer gun head is 1/4" quick connector which is compact with 1/4" plug, such as foam cannon, nozzle tips, swivel coupler. In addition, the M22-14 threaded inlet fitting is easy to connect inside the 14mm diameter pressure washer hose. Please 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 windshield washer spray gun is 1/4" quick disconnect fitting and 1/4" inlet fitting. M22-14 thread (inner diameter 14mm). The black accessories are M22 to QC adapter, it is easy to use and removable, which means it can be easily installed on Karcher Quick Connect spray gun. ✔ Equipped with 5 nozzles at different colors quick connection: red nozzle is suitable for blowing (0º), orange nozzle is suitable for stripping (15º), green nozzle is suitable for cleaning (25º), white nozzle is suitable for washing (40º), and black nozzle is suitable for soap (65º). You can choose the right nozzle for the