Usage Tips: AIRLESS NOZZLE SET: You will get 2 different sizes of reversible airless nozzles. The two models are the 415 and 517, and there are two of each. Each of them comes with a nozzle seal. Meet the replacement needs of your daily life. High Quality Durable Material: The reversible airless nozzle consists of 304 stainless steel handle and tungsten carbide orifice. The tip sealing ring is sealed with a stainless steel and nylon tip, which is strong and wear-resistant, odorless, non-toxic, waterproof, easy to clean, corrosion-resistant, wear-resistant and high precision. EASY TO INSTALL AND CLEAN: The spray gun head can be mounted on an airless spray gun. No other tools are required and paint can be sprayed onto surfaces immediately. Simply insert the nozzle seal into the protective base, then place the nozzle into the protective base, and finally twist and secure. Cleanup is quick and easy, just twist the nozzle to clean. Wide Compatibility: These airless paint spray nozzles come in 2 models and are compatible with most airless sprayers; corresponding nozzle diameters are 0.015inch and 0.017inch with a spray range of 8 - 12inch / 20 - 30 cm; coverage varies based on the size of the opening, and the appropriate nozzle size can be selected according to actual needs. Versatile: Tungsten steel nozzles are compatible with most common airless paint spray guns. Suitable for various surfaces and materials, such as industrial enamels, varnishes, water-based paints, latex paints for interior and exterior walls, fire-retardant paints, etc. Can be used for home decoration, painting and industrial finishing and decoration.