The Smith Performance Field King Pro is a professional-grade 15 litre capacity knapsack sprayer for both summer and winter applications. An exclusive high-performance no-leak internal pump ensures that chemicals won’t leak down the wearer’s back and clothing, while innovative paddles in the tank ensure liquid and water soluble powder chemicals are always perfectly mixed ready for application. Other features include a lockable trigger to prevent hand fatigue, easy to change seals and flat spray or foaming nozzles. The Smith Performance Field King Pro is manufactured from materials that are resistant to commonly-found chemicals ensuring the longest possible lifetime