Dive Rite Button SPG (PSI/BAR) Displaying pressures up to 5000 PSI in 1000 PSI increments and 350 bar on the same face, our 1-inch Button SPG is ideal for use with pony, Argon, and bailout bottles when all you need is an indication of full or empty. A simple white face makes reading pressures easy. - Fits standard, 7/16 in high pressure port of any first stage regulator- No hose required- Chrome-plated brass with a polycarbonate face resists corrosion and scratches
