TOLCO MODEL 320 SPRAYER: Less Fatigue Up to 3.5 times greater output per stroke significantly reduces the number of times you pull the trigger. Great Value. Unsurpassed Chemical Resistance, Synthetic O-ring and piston cup hold up against the harshest chemicals. Less Fatigue, Long Lasting Outer body protects piston assembly to prevent damage during use and storage. High output and an extra large spray pattern makes quick work of any job Comfort Design Three-finger trigger and rear support makes extended use more comfortable Applications.Tolco