Sierra 69723P Arctic Series OB Twin Engine Gauge KitFeatures: Gauge Description: Twin Engine Add On OB Gauge Kit; Gauge set: 2; Scratch-resistant domed glass lenses; Enhanced illumination: through-dial and perimeter lighting for excellent readability at night; U.S. and metric scales, with ISO symbols, where appropriate; Optional add-on eyebrow or square bezels available (see Gauge Accessories for details); Contains: 68383P Voltmeter; 68374P 7K Tachometer;