The Chapin Deluxe Professional All-Purpose Hose End with metering dial features a durable poly tank. This hose-end sprayer has a built-in anti-siphon to prevent backflow and long-lasting brass mixing head with 16 mixing ratios. Fits a standard garden hose male end. Sprays up to 320 gallons from 32 ounces of concentrate. Just fill and set and it automatically mixes liquid concentrate with water.