The Manhole Cleaner Series from NozzTeq combines a cleaning nozzle with a safety cage that encloses a nozzle-tipped spinning propeller that scours manhole chimneys with jetting power of up to 5,000 psi. The safety cage serves two functions: It positions the spinning nozzles a few inches away from the manhole interior for maximum cleaning effectiveness, and keeps the spinning arms and nozzles away from debris and hard concrete walls. The cage and propeller are both made of durable, maintenance-free stainless steel. Just lower the unit into the manhole and withdraw. The unit comes in seven sizes. 866/620-5915; www.nozzteq.com.