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The Topeak Smart Gauge D2 is a precision digital gauge that reads up to 250 psi / 17 bar and is designed for use with road tyres, suspension forks and rear shock units. The LCD display can be programmed to show pressure in psi, Bar or kg/cm2. The gauge comes with SmartHead technology which is a compact, single head design that senses whether your inner tube valve stem is Presta or Schrader and automatically adjusts the internals for a perfect, air tight fit every time.