Karcher 15-Inch Pressure Washer Surface Cleaner Attachment, 3200 PSI Rating The Karcher Promise: Cleaner. Quicker. Delivers professional level cleaning over an area 15 wide with two spinning nozzles Cleans flat surfaces up to 4x faster than standard spray nozzles Compatible with gas power washers (up to 3200 PSI) with  quick-connect fitting. Product dimensions(L x W x H): 15 x 15 x 6.7 inches Compatible machines g2700, g2700r, g2900x, g3000, g3000k, g3000 x, g3000 xk, g3100 xh, g3200 x, g3200 xk, g2200, g2600 vh, g3000 oh, g3050 ohc, g3200 oc, g3200 oct, g3200 oh, g3200 xc and g3200 xh Eliminates streaks by keeping the nozzles at a fixed height from the surface Perfect for cleaning large surfaces such as driveways, patios, decks, and sidewalks Also cleans vertical surfaces including garage doors and home siding Rotation speed (rpm): 1500 . Splash-free skirt keeps you dry while you clean