The Manhole Cleaner Series system from NozzTeq includes a specialized nozzle and cage system that combines a NozzTeq nozzle with a safety cage that encloses a nozzle-tipped spinning propeller that scours manhole chimneys with jetting power up to 5,000 psi. The safety cage positions the spinning nozzles a few inches away from the manhole interior for cleaning effectiveness and keeps the spinning arms and nozzles away from debris and hard concrete walls. Since the cage and propeller are both made of stainless steel, the unit is durable and maintenance-free. All the operator has to do is lower the device into the manhole, then withdraw it. It is available in seven sizes. 866/620-5915; www.nozzteq.com.