1-1/2" Npsh Aluminum Camlock Fitting Coupling With Heavy-Duty Industrial Fire ? EXACT SIZE -Thermoplastic 1-1/2 inch nozzle with NPSH threads attached to a 1.5 inch aluminum female camlock. Female 1-1/2" NPSH will only connect to a male 1-1/2? NPSH/NPT. IDM of 1.5" NPSH nozzle is 1.78" ? MULTIPURPOSE APPLICATION - Recommended for fire hose and fire hose racks for lined or unlined fire hose. This fire nozzle is for attaching to a fire hose and for extinguishing fires. This spray nozzle is for fire fighter fireman station, also could be for green house applications, dust suppression, and evaporate cooling ? PREMIUM MATERIAL - Polycarbonate housing for resistance to high temperature and impact. Brass stem for resistance to corrosion. Aluminum camlocks for resisting corrosion and tarnishing ? EASY TO CONTROL - By rotating to control on and off and adjust spray size, adjusts from straight stream to fog for multipurpose use. Industrial constant flow fog nozzle. Provides consistent volume at any spray angle. Capable of complete shutoff, straight stream or any degree of conical fog. Aluminum 1-1/2" camlock and nozzle has the option of a shut-off, fog pattern or a straight stream ? 100% SATISFACTION SERVICE - We have a professional fire nozzles development team. If you have any questions about compatibility or any dissatisfaction, please feel free to contact us and we will help you solve it perfectly