... of nozzle and lances.The economical and labor saving friend.Manual Knapsack Sprayer Packing4pcs packed in on carton, 170 cartons ... in one carton, 700 cartons packed in 1*20ft container.Manual Knapsack Sprayer QualityChemically resistant, piston pump, padded shoulder strapsHigh pressure ... the agricultural area, garden spraying, sterilization and environment protection. Manual Knapsack Sprayer (ES-36)