Package of 12 TeeJet Tip Strainer 8079-PP-50. These strainers are designed to protect spray nozzle orifices from clogging or damage. They are to be inserted in the nozzle body right behind the spray nozzle and cap. This TeeJet 8079-PP-50 Strainer has a polypropylene body and cap, and a 50 mesh stainless steel screen.