Karcher T250 Hard Surface Cleaner for Electric Pressure Washers (Deck, Driveway, Patio, Tool Accessory) The Karcher Promise: Cleaner. Quicker. Best-in-class cleaning performance. Karchers T300 Surface Cleaner tackles large, surface cleaning tasks in no time. Comfortably clean decks, garage floors, driveways and patios with ease. With a large 11 diameter cleaning head, variable pressure dial and 32 wand extension, the T300 Surface Cleaner is ready to tackle your biggest jobs. Locking joint allows extension wands to lock vertically for breaks or compact storage. More efficient and quicker cleaning: cleans an area 11" wide with two nozzles instead of one! Also cleans vertical surfaces, such as garage doors, house siding, stone walls, etc. Compatible with all Karcher residential electric pressure washers