Package Contents: You will receive 6 reversible airless spray nozzles and 2 airless spray shields, each equipped with an airless spray nozzle and a nozzle seal; these 7 models are 211, 315, 417, 515, 517, 523, sufficient for your daily use and replacement. Wide Compatibility: There are 6 models, namely 211, 315, 417, 515, 517, 523, the corresponding nozzle diameter is 0.0 cm, 0.0 cm, 0.0 cm, 0.1 cm, and the spray range is 10-30 cm. The airless spray nozzles are compatible with most airless sprayers. The spray range varies depending on the opening size. Airless Spray Guard: The guard acts as a safety device to prevent a person from coming into contact with the nozzle while spraying and keeps the spray nozzle in place. Fits 2WCW8, 2WCW9, 2WCX1, 2WCX2, 2WCX3, 2WCX4, 2WCX5, 2WCX6, 2WCX7, 2WCX8. Easy installation: Insert the included tip into the guard holder, insert the spray nozzles into the guard holder, and twist to secure. Easy to clean: Simply twist the nozzle and wash. Versatile