Karcher Dirtblaster Spray Wand for Karcher Electric Power Pressure Washers The Karcher Promise: Cleaner. Quicker. Dirtblaster Rotary Spray Wand uses patented technology to increase the effective pressure of your Karcher electric pressure washer by up to 50%. Ideal for areas where intense cleaning is needed Not for use on delicate surfaces For Karcher electric models K2/K3/K4/K5. Does not fit K1700-K2000