Gauge attaches magnetically to machine's fuel tank to quickly check both Static (idling) and Load (under acceleration) fuel pressure readingsUsed to diagnose loss of power, poor fuel economy, hesitation, and stallingComes complete with its own storage pouch and O-ring lubeEntire connection and disconnection takes only secondsPerfect for dyno tuning and no tools requiredHead rotates 360°Made in the USAFits '01-'25 Harley Davidson models (except for V-Rod) with Delphi fuel injection.