Garden Hose Chemical Mixing UnitA MUST HAVE FOR NEUTRALISING SALT IN YOUR CHASSIS RAILS! Easily flush Salt & Sand out of your chassis rails with Salt Exterminator! Effortlessly flush Salty Corrosive Water out of your Outboard Motor with Salt Exterminator Marine Series Outboard PWC Engine Flush! Fully adjustable mixture dispersion dial 5 levels of foaming power Allows for Salt Exterminators Deep Expansion Technology to occur Designed for use with Salt Exterminator 4WD Wash & Marine