The balanced piston R-500 first stage is incredibly small and weighs only 720g.

It has a full complement of four low-pressure and two high-pressure ports 

Equipped with a quick adjustment screw that can easily be tuned for optimum performance.

The S-20 second stage is a compact and lightweight design

Featuring an over-sized purge button and an ortho-friendly mouthpiece for greater comfort and reduced jaw fatigue.

The all new R-500 piston first stage is incredibly small, lightweight (720g) and offers superior performance.

Optimized layout of 4L.P. and 2 H.P. ports allows versatile hose placement.

The R-500 incorporates an adjustment screw for ease of maintenance.