The TRIDENT HYDRO TWISTERS® hook up to your hot or cold water pressure washer to quickly clean more square footage of concrete and driveways, without zebra striping, than others in their class. The proprietary aluminum spray arm with compound angled nozzles not only clean up to the edge but also push water aside to create more impact on the surface they clean. All stainless steeel, rustproof deck and handle construction will keep your concrete surface cleaner working and looking great for years. Visit http://www.hydrotek.us/inventory/hydro-twister-surface-cleaner/ for more information.