The Chapin Professional Hose End Sprayer is a multi-function sprayer with a metering dial for precise spraying efficiency. The sprayer has a sturdy poly tank and a firm-grip handle. There is a brass mixing head with 16 mixing ratios and an anti-siphon feature to prevent backflow. It is designed to fit any standard garden hose. With 32 ounces of concentrate, the product can spray 320 gallons. For convenience, the preferred chemical is mixed with water.