The Suttner Soft Wash Gun is made only  for soft washing using a dedicated pump. For just the gun, select No Fittings. Choose DIY or RTU to include 1/2x1/2 hose barb, 1/2x1/4 reducing bushing for the 1/4 inch FPT Quick Coupler for your nozzles. (Nozzles not included) You can assemble the DIY Kit yourself for, or if you'd like us to ship it RTU with the fittings installed, you can choose the up-charge assembly fee for Ready to Use. If you'd like us to ship it RTU with the fittings installed, choose RTU Assembly. Selecting DIY means you will attach the fittings to the gun yourself.  18.5 GPM 365 PSI Maximum 320 F Maximum 1/2" FPT inlet/outlet Stainless Steel Spring DO NOT USE WITH A PRESSURE WASHER I have an awesome Online Pressure Washing School that is perfect if you are just starting a pressure washing business.  You can also get some great tips at my You Tube Channel. If you have any questions about our products please use the CONTACT FORM