Bundle includes 3 Items: (1) TeeJet AA122-3/4-PP-16 Line Strainer with (1) O-Ring # CP23173-EPR and (1) Stainless Steel 50 Mesh Screen # CP45102-3-SSPP. The compact size on the TeeJet AA122-3/4-PP-16 Line Strainer makes it ideal for small turf sprayers or agricultural sprayers. The TeeJet AA122 Series Line Strainers, also called suction strainers, are used to filter out debris that may enter your pump and help prevent nozzles from clogs. A 16 mesh stainless steel screen comes standard on this TeeJet AA122-3/4-PP-16 Strainer and provides excellent chemical resistance. The head and bowl are made of polypropylene to add to the overall durability of the line strainers. Note: Install the TeeJet AA122 Series Line Strainer on the inlet side of the pump. TeeJet is a division of Spraying Systems.