Select N Spray sprayer. No premixing required. Simply set metering dial for required diluting, the concentrate and water will mix automatically. Metering dial adjusts up to 11 dilution rates from 1 to 21 teaspoons. Sprays up to 132 gallon on a single fill. Durable, chemical resistant, rustproof polymer construction includes a spray pattern dial. Mixing dial eliminates confusion; each setting shown in teaspoons, tablespoons and ounces per gallon. 12 specially selected mixture settings meet the needs of most popular garden treatments 1-1/2 teaspoons per gallon to 8 ounces per gallon. Swivel nut for upright hose attachment; Built-in anti-siphon device prevents back flow. Additional mixing "off" setting for watering or rinsing plants sprayed in error. Made in USA.