The MTM Hydro Stainless Steel 1.1 mm Orifice is meant to allow your foam cannons to be used on a variety of machines with varying PSI and GPM. This orifice will more accurately accommodate a machine requiring a smaller orifice which is estimated in the ranges of flow. The purpose is not to increase or decrease pressure but rather to match as closely as possible.

The MTM Hydro Foam Cannon already comes with a 1.25 mm orifice. The MTM Hydro Stainless Steel 1.1 mm Orifice is designed for use with lower-end electric pressure washers like the Ryobi, SunJoe, AR Blue, etc.