Scope of delivery: You will receive 6 reversible airless nozzles and 2 airless guards, each equipped with an airless nozzle and a seal. The 7 models are 211, 315, 417, 515, 517, and 523, sufficient for daily use and replacement. Wide compatibility: There are 6 models, namely 211, 315, 417, 515, 517, and 523. The corresponding nozzle diameters are 0.0 cm, 0.0 cm, 0.0 cm, and 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 size of the opening. Airless Spray Guard: The guard serves as a safety device to prevent a person from touching the nozzle while spraying and holds the spray nozzle in place. For use with 2WCW8, 2WCW9, 2WCX1, 2WCX2, 2WCX3, 2WCX4, 2WCX5, 2WCX6, 2WCX7, 2WCX8. Easy Installation: Insert the included tip into the guard base, place the spray nozzles in the guard base, and twist to secure. Easy to clean, simply twist the nozzle and wash. Wide Application: Suitable for most