Gauge - Fuel Pressure 360Gauge attaches magnetically to machine's fuel tank to quickly check both Static (idling) and Load (under acceleration) fuel pressure readings. Use it to diagnose loss of power, poor fuel economy, hesitation, and stalling. Comes complete with its own storage pouch and O ring lube. Entire connection and disconnection takes only seconds. Perfect for dyno tuning and no tools required. Made in the U. S. A..