MTM Stainless MPT Nozzle offers superior performance and extended life as a result of our refined manufacturing process. This premium nozzle is25°. These Stainless MPT Nozzles are 100% tested for orifice accuracy and degree setting so you never have to worry about using an inaccurate nozzle. All MTM Hydro nozzles are laser etched along the neck with degree and size of the nozzle. For reference: 25045 translates to 25° size 4.5 orifice.